diff --git a/src/main/scala/gitbucket/core/api/ApiBranch.scala b/src/main/scala/gitbucket/core/api/ApiBranch.scala
new file mode 100644
index 0000000..cf6805b
--- /dev/null
+++ b/src/main/scala/gitbucket/core/api/ApiBranch.scala
@@ -0,0 +1,16 @@
+package gitbucket.core.api
+
+import gitbucket.core.util.RepositoryName
+
+/**
+ * https://developer.github.com/v3/repos/#get-branch
+ * https://developer.github.com/v3/repos/#enabling-and-disabling-branch-protection
+ */
+case class ApiBranch(
+  name: String,
+  // commit: ApiBranchCommit,
+  protection: ApiBranchProtection)(repositoryName:RepositoryName) extends FieldSerializable {
+  def _links = Map(
+   "self" -> ApiPath(s"/api/v3/repos/${repositoryName.fullName}/branches/${name}"),
+   "html" -> ApiPath(s"/${repositoryName.fullName}/tree/${name}"))
+}
diff --git a/src/main/scala/gitbucket/core/api/ApiBranchProtection.scala b/src/main/scala/gitbucket/core/api/ApiBranchProtection.scala
new file mode 100644
index 0000000..85d2f4d
--- /dev/null
+++ b/src/main/scala/gitbucket/core/api/ApiBranchProtection.scala
@@ -0,0 +1,37 @@
+package gitbucket.core.api
+
+import gitbucket.core.service.ProtectedBrancheService
+import org.json4s._
+
+/** https://developer.github.com/v3/repos/#enabling-and-disabling-branch-protection */
+case class ApiBranchProtection(enabled: Boolean, required_status_checks: Option[ApiBranchProtection.Status]){
+  def status: ApiBranchProtection.Status = required_status_checks.getOrElse(ApiBranchProtection.statusNone)
+}
+
+object ApiBranchProtection{
+  /** form for enabling-and-disabling-branch-protection */
+  case class EnablingAndDisabling(protection: ApiBranchProtection)
+
+  def apply(info: Option[ProtectedBrancheService.ProtectedBranchInfo]): ApiBranchProtection = info match {
+    case None       => ApiBranchProtection(false, Some(statusNone))
+    case Some(info) => ApiBranchProtection(true, Some(Status(if(info.includeAdministrators){ Everyone }else{ NonAdmins }, info.requireStatusChecksToPass)))
+  }
+  val statusNone = Status(Off, Seq.empty)
+  case class Status(enforcement_level: EnforcementLevel, contexts: Seq[String])
+  sealed class EnforcementLevel(val name: String)
+  case object Off extends EnforcementLevel("off")
+  case object NonAdmins extends EnforcementLevel("non_admins")
+  case object Everyone extends EnforcementLevel("everyone")
+
+  implicit val enforcementLevelSerializer = new CustomSerializer[EnforcementLevel](format => (
+   {
+     case JString("off") => Off
+     case JString("non_admins") => NonAdmins
+     case JString("everyone") => Everyone
+   },
+   {
+     case x: EnforcementLevel => JString(x.name)
+   }
+ ))
+}
+
diff --git a/src/main/scala/gitbucket/core/api/JsonFormat.scala b/src/main/scala/gitbucket/core/api/JsonFormat.scala
index bd9c3bf..0733ba4 100644
--- a/src/main/scala/gitbucket/core/api/JsonFormat.scala
+++ b/src/main/scala/gitbucket/core/api/JsonFormat.scala
@@ -30,7 +30,8 @@
     FieldSerializer[ApiCombinedCommitStatus]() +
     FieldSerializer[ApiPullRequest.Commit]() +
     FieldSerializer[ApiIssue]() +
-    FieldSerializer[ApiComment]()
+    FieldSerializer[ApiComment]() +
+    ApiBranchProtection.enforcementLevelSerializer
 
   def apiPathSerializer(c: Context) = new CustomSerializer[ApiPath](format =>
     (
diff --git a/src/main/scala/gitbucket/core/controller/RepositorySettingsController.scala b/src/main/scala/gitbucket/core/controller/RepositorySettingsController.scala
index 46f4b83..e51b475 100644
--- a/src/main/scala/gitbucket/core/controller/RepositorySettingsController.scala
+++ b/src/main/scala/gitbucket/core/controller/RepositorySettingsController.scala
@@ -2,7 +2,7 @@
 
 import gitbucket.core.settings.html
 import gitbucket.core.model.WebHook
-import gitbucket.core.service.{RepositoryService, AccountService, WebHookService}
+import gitbucket.core.service.{RepositoryService, AccountService, WebHookService, ProtectedBrancheService, CommitStatusService}
 import gitbucket.core.service.WebHookService._
 import gitbucket.core.util._
 import gitbucket.core.util.JGitUtil._
@@ -18,11 +18,11 @@
 
 
 class RepositorySettingsController extends RepositorySettingsControllerBase
-  with RepositoryService with AccountService with WebHookService
+  with RepositoryService with AccountService with WebHookService with ProtectedBrancheService with CommitStatusService
   with OwnerAuthenticator with UsersAuthenticator
 
 trait RepositorySettingsControllerBase extends ControllerBase {
-  self: RepositoryService with AccountService with WebHookService
+  self: RepositoryService with AccountService with WebHookService with ProtectedBrancheService with CommitStatusService
     with OwnerAuthenticator with UsersAuthenticator =>
 
   // for repository options
@@ -106,10 +106,12 @@
     redirect(s"/${repository.owner}/${form.repositoryName}/settings/options")
   })
 
+  /** branch settings */
   get("/:owner/:repository/settings/branches")(ownerOnly { repository =>
     html.branches(repository, flash.get("info"))
   });
 
+  /** Update default branch */
   post("/:owner/:repository/settings/update_default_branch", defaultBranchForm)(ownerOnly { (form, repository) =>
     if(repository.branchList.find(_ == form.defaultBranch).isEmpty){
       redirect(s"/${repository.owner}/${repository.name}/settings/options")
@@ -124,6 +126,36 @@
     }
   })
 
+  /** Branch protection for branch */
+  get("/:owner/:repository/settings/branches/:branch")(ownerOnly { repository =>
+    import gitbucket.core.api._
+    val branch = params("branch")
+    if(repository.branchList.find(_ == branch).isEmpty){
+      redirect(s"/${repository.owner}/${repository.name}/settings/branches")
+    }else{
+      val protection = ApiBranchProtection(getProtectedBranchInfo(repository.owner, repository.name, branch))
+      val lastWeeks = getRecentCommitStatues(repository.owner, repository.name, org.joda.time.LocalDateTime.now.minusWeeks(1).toDate).map(_.context).toSet
+      val knownContexts = (lastWeeks ++ protection.status.contexts).toSeq.sortBy(identity)
+      html.brancheprotection(repository, branch, protection, knownContexts, flash.get("info"))
+    }
+  });
+
+  /** https://developer.github.com/v3/repos/#enabling-and-disabling-branch-protection */
+  patch("/api/v3/repos/:owner/:repo/branches/:branch")(ownerOnly { repository =>
+    import gitbucket.core.api._
+    (for{
+      branch <- params.get("branch") if repository.branchList.find(_ == branch).isDefined
+      protection <- extractFromJsonBody[ApiBranchProtection.EnablingAndDisabling].map(_.protection)
+    } yield {
+      if(protection.enabled){
+        enableBranchProtection(repository.owner, repository.name, branch, protection.status.enforcement_level == ApiBranchProtection.Everyone, protection.status.contexts)
+      }else{
+        disableBranchProtection(repository.owner, repository.name, branch)
+      }
+      JsonFormat(ApiBranch(branch, protection)(RepositoryName(repository)))
+    }) getOrElse NotFound
+  });
+
   /**
    * Display the Collaborators page.
    */
diff --git a/src/main/scala/gitbucket/core/service/CommitStatusService.scala b/src/main/scala/gitbucket/core/service/CommitStatusService.scala
index 2ebea2b..0e9a427 100644
--- a/src/main/scala/gitbucket/core/service/CommitStatusService.scala
+++ b/src/main/scala/gitbucket/core/service/CommitStatusService.scala
@@ -7,7 +7,7 @@
 import gitbucket.core.util.Implicits._
 import gitbucket.core.util.StringUtil._
 import gitbucket.core.service.RepositoryService.RepositoryInfo
-
+import org.joda.time.LocalDateTime
 
 trait CommitStatusService {
   /** insert or update */
@@ -42,6 +42,10 @@
   def getCommitStatues(userName: String, repositoryName: String, sha: String)(implicit s: Session) :List[CommitStatus] =
     byCommitStatues(userName, repositoryName, sha).list
 
+  implicit val date2SqlDate = MappedColumnType.base[java.util.Date, java.sql.Timestamp]( d => new java.sql.Timestamp(d.getTime), d => new java.util.Date(d.getTime) )
+  def getRecentCommitStatues(userName: String, repositoryName: String, time: java.util.Date)(implicit s: Session) :List[CommitStatus] =
+    CommitStatuses.filter(t => t.byRepository(userName, repositoryName)).filter(t => t.updatedDate > time.bind).list
+
   def getCommitStatuesWithCreator(userName: String, repositoryName: String, sha: String)(implicit s: Session) :List[(CommitStatus, Account)] =
     byCommitStatues(userName, repositoryName, sha).innerJoin(Accounts)
       .filter{ case (t,a) => t.creator === a.userName }.list
diff --git a/src/main/scala/gitbucket/core/service/ProtectedBrancheService.scala b/src/main/scala/gitbucket/core/service/ProtectedBrancheService.scala
index 572e081..4029801 100644
--- a/src/main/scala/gitbucket/core/service/ProtectedBrancheService.scala
+++ b/src/main/scala/gitbucket/core/service/ProtectedBrancheService.scala
@@ -10,16 +10,26 @@
 import org.eclipse.jgit.lib.ObjectId
 
 
+object MockDB{
+  val data:scala.collection.mutable.Map[(String,String,String),(Boolean, Seq[String])] = scala.collection.mutable.Map(("root", "test58", "hoge2") -> (false, Seq.empty))
+}
+
 trait ProtectedBrancheService {
   import ProtectedBrancheService._
   def getProtectedBranchInfo(owner: String, repository: String, branch: String)(implicit session: Session): Option[ProtectedBranchInfo] = {
     // TODO: mock
-    if(owner == "root" && repository == "test58" && branch == "hoge2"){
-      Some(new ProtectedBranchInfo(owner, repository, Seq.empty, false))
-    }else{
-      None
+    MockDB.data.get((owner, repository, branch)).map{ case (includeAdministrators, requireStatusChecksToPass) =>
+      new ProtectedBranchInfo(owner, repository, requireStatusChecksToPass, includeAdministrators)
     }
   }
+  def enableBranchProtection(owner: String, repository: String, branch:String, includeAdministrators: Boolean, requireStatusChecksToPass: Seq[String])(implicit session: Session): Unit = {
+    // TODO: mock
+    MockDB.data.put((owner, repository, branch), includeAdministrators -> requireStatusChecksToPass)
+  }
+  def disableBranchProtection(owner: String, repository: String, branch:String)(implicit session: Session): Unit = {
+    // TODO: mock
+    MockDB.data.remove((owner, repository, branch))
+  }
 
   def getBranchProtectedReason(owner: String, repository: String, receivePack: ReceivePack, command: ReceiveCommand, pusher: String)(implicit session: Session): Option[String] = {
     val branch = command.getRefName.stripPrefix("refs/heads/")
@@ -31,7 +41,7 @@
   }
 }
 object ProtectedBrancheService {
-  class ProtectedBranchInfo(
+  case class ProtectedBranchInfo(
     owner: String,
     repository: String,
     /**
diff --git a/src/main/twirl/gitbucket/core/settings/brancheprotection.scala.html b/src/main/twirl/gitbucket/core/settings/brancheprotection.scala.html
new file mode 100644
index 0000000..a930ac1
--- /dev/null
+++ b/src/main/twirl/gitbucket/core/settings/brancheprotection.scala.html
@@ -0,0 +1,110 @@
+@(repository: gitbucket.core.service.RepositoryService.RepositoryInfo,
+  branch: String,
+  protection: gitbucket.core.api.ApiBranchProtection,
+  knownContexts: Seq[String],
+  info: Option[Any])(implicit context: gitbucket.core.controller.Context)
+@import context._
+@import gitbucket.core.view.helpers._
+@import gitbucket.core.model.WebHook._
+@check(bool:Boolean)={@if(bool){ checked}}
+@html.main(s"Branch protection for ${branch}", Some(repository)){
+  @html.menu("settings", repository){
+    @menu("branches", repository){
+      @helper.html.information(info)
+        <div class="alert alert-info" style="display:none" id="saved-info">Branch protection options saved</div>
+        <div class="box"><form name="branchProtection" onsubmit="submitForm(event)">
+          <div class="box-header">Branch protection for <b>@branch</b></div>
+          <div class="box-content-bottom">
+
+            <div class="checkbox">
+              <label class="strong"><input type="checkbox" name="enabled" onclick="update()" @check(protection.enabled)>Protect this branch</label>
+              <p class="help-block">Disables force-pushes to this branch and prevents it from being deleted.</p>
+            </div>
+
+            <div class="checkbox js-enabled" style="display:none">
+              <label class="strong"><input type="checkbox" name="has_required_statuses" onclick="update()" @check(protection.status.enforcement_level.name!="off")>Require status checks to pass before merging</label>
+              <p class="help-block">Choose which status checks must pass before branches can be merged into test.
+              When enabled, commits must first be pushed to another branch, then merged or pushed directly to test after status checks have passed.</p>
+
+              <div class="js-has_required_statuses" style="display:none">
+                <div class="checkbox">
+                  <label class="strong"><input type="checkbox" name="enforce_for_admins" onclick="update()" @check(protection.status.enforcement_level.name=="everyone")>Include administrators</label>
+                  <p class="help-block">Enforce required status checks for repository administrators.</p>
+                </div>
+
+                <div class="box">
+                  <div class="box-header">Status checks found in the last week for this repository</div>
+                  <div class="box-content-bottom">
+                    @knownContexts.map{ br =>
+                      <label class="checkbox">
+                        <input type="checkbox" name="contexts" value="@br" onclick="update()" @check(protection.status.contexts.find(_==br))>
+                        <span>@br</span>
+                      </label>
+                    }
+                  </div>
+                </div>
+              </div>
+            </div>
+            <input class="btn btn-success" type="submit" value="Save changes" />
+          </div>
+        </form></div>
+    }
+  }
+}
+<script>
+function getValue(){
+  var v = {}, contexts=[];
+  $("input[type=checkbox]:checked").each(function(){
+    if(this.name == 'context'){
+      contexts.push(this.name);
+    }else{
+      v[this.name] = true;
+    }
+  });
+  if(v.enabled){
+    return {
+      enabled: true,
+      required_status_checks: {
+        enforcement_level: v.has_required_statuses ? ((v.enforce_for_admins ? 'everyone' : 'non_admins')) : 'off',
+        contexts: v.has_required_statuses ? contexts : []
+      }
+    };
+  }else{
+    return {
+      enabled: false,
+      required_status_checks: {
+        enforcement_level: "off",
+        contexts: []
+      }
+    };
+  }
+}
+function updateView(protection){
+  $('.js-enabled').toggle(protection.enabled);
+  $('.js-has_required_statuses').toggle(protection.required_status_checks.enforcement_level != 'off');
+}
+function update(){
+  var protection = getValue();
+  updateView(protection);
+}
+$(update);
+function submitForm(e){
+  e.stopPropagation();
+  e.preventDefault();
+  var protection = getValue();
+  $.ajax({
+    method:'PATCH',
+    url:'/api/v3/repos/@repository.owner/@repository.name/branches/@encodeRefName(branch)',
+    contentType: 'application/json',
+    dataType: 'json',
+    data:JSON.stringify({protection:protection}),
+    success:function(r){
+      $('#saved-info').show();
+    },
+    error:function(err){
+      console.log(err);
+      alert('update error');
+    }
+  });
+}
+</script>
diff --git a/src/main/twirl/gitbucket/core/settings/branches.scala.html b/src/main/twirl/gitbucket/core/settings/branches.scala.html
index ed57bbf..1bb2b32 100644
--- a/src/main/twirl/gitbucket/core/settings/branches.scala.html
+++ b/src/main/twirl/gitbucket/core/settings/branches.scala.html
@@ -30,6 +30,21 @@
               <input type="submit" class="btn" value="Update" />
             </form>
           </div>
+
+          <div class="box-header">Protected branches</div>
+          <div class="box-content-bottom">
+            <p>Protect branches to disable force pushing, prevent branches from being deleted, and optionally require status checks before merging. New to protected branches?</p>
+            <fieldset class="margin">
+              <select name="protectBranch" id="protectBranch" onchange="location=$(this).val()">
+                <option>Choose a branch...</option>
+                @repository.branchList.map { branch =>
+                  <option value="@url(repository)/settings/branches/@encodeRefName(branch)">@branch</option>
+                }
+              </select>
+              <span class="error" id="error-protectBranch"></span>
+            </fieldset>
+          </div>
+
         </div>
       }
     }
diff --git a/src/test/scala/gitbucket/core/api/JsonFormatSpec.scala b/src/test/scala/gitbucket/core/api/JsonFormatSpec.scala
index 8b3c351..5395da6 100644
--- a/src/test/scala/gitbucket/core/api/JsonFormatSpec.scala
+++ b/src/test/scala/gitbucket/core/api/JsonFormatSpec.scala
@@ -354,6 +354,16 @@
   }"""
 
 
+  val apiBranchProtection = ApiBranchProtection(true, Some(ApiBranchProtection.Status(ApiBranchProtection.Everyone, Seq("continuous-integration/travis-ci"))))
+  val apiBranchProtectionJson = """{
+    "enabled": true,
+    "required_status_checks": {
+      "enforcement_level": "everyone",
+      "contexts": [
+        "continuous-integration/travis-ci"
+      ]
+    }
+}"""
 
   def beFormatted(json2Arg:String) = new Matcher[String] {
     def apply[S <: String](e: Expectable[S]) = {
@@ -411,5 +421,8 @@
     "apiPullRequestReviewComment" in {
       JsonFormat(apiPullRequestReviewComment) must beFormatted(apiPullRequestReviewCommentJson)
     }
+    "apiBranchProtection" in {
+      JsonFormat(apiBranchProtection) must beFormatted(apiBranchProtectionJson)
+    }
   }
 }