diff --git a/conf/locale/locale_en-US.ini b/conf/locale/locale_en-US.ini
index 534e8d3879..c0979d1bdb 100644
--- a/conf/locale/locale_en-US.ini
+++ b/conf/locale/locale_en-US.ini
@@ -66,7 +66,7 @@ app_url_helper = This affects HTTP/HTTPS clone URL and somewhere in e-mail.
 email_title = E-mail Service Settings (Optional)
 smtp_host = SMTP Host
 mailer_user = Sender E-mail
-mailer_password = Sender Password 
+mailer_password = Sender Password
 notify_title = Notification Settings(Optional)
 register_confirm = Enable Register Confirmation
 mail_notify = Enable Mail Notification
@@ -514,6 +514,8 @@ dashboard.delete_repo_archives = Delete all repositories archives
 dashboard.delete_repo_archives_success = All repositories archives have been deleted successfully.
 dashboard.git_gc_repos = Do garbage collection on repositories
 dashboard.git_gc_repos_success = All repositories have done garbage collection successfully.
+dashboard.resync_all_sshkeys = Do resync .ssh/autorized_key file
+dashboard.resync_all_sshkeys_success = All keys are synced again.
 dashboard.server_uptime = Server Uptime
 dashboard.current_goroutine = Current Goroutines
 dashboard.current_memory_usage = Current Memory Usage
@@ -714,16 +716,3 @@ months = %d months %s
 years = %d years %s
 raw_seconds = seconds
 raw_minutes = minutes
-
-
-
-
-
-
-
-
-
-
-
-
-
diff --git a/models/publickey.go b/models/publickey.go
index 566814e841..41233d0c39 100644
--- a/models/publickey.go
+++ b/models/publickey.go
@@ -244,7 +244,7 @@ func CheckPublicKeyString(content string) (bool, error) {
 }
 
 // saveAuthorizedKeyFile writes SSH key content to authorized_keys file.
-func saveAuthorizedKeyFile(key *PublicKey) error {
+func saveAuthorizedKeyFile(keys ...*PublicKey) error {
 	sshOpLocker.Lock()
 	defer sshOpLocker.Unlock()
 
@@ -269,8 +269,13 @@ func saveAuthorizedKeyFile(key *PublicKey) error {
 		}
 	}
 
-	_, err = f.WriteString(key.GetAuthorizedString())
-	return err
+	for _, key := range keys {
+		_, err = f.WriteString(key.GetAuthorizedString())
+		if err != nil {
+			return err
+		}
+	}
+	return nil
 }
 
 // AddPublicKey adds new public key to database and authorized_keys file.
@@ -422,3 +427,21 @@ func DeletePublicKey(key *PublicKey) error {
 	}
 	return os.Rename(tmpPath, fpath)
 }
+
+// RewriteAllPublicKeys remove any authorized key and re-write all key from database again
+func RewriteAllPublicKeys() error {
+	keys := make([]*PublicKey, 0, 5)
+	err := x.Find(&keys)
+	if err != nil {
+		return err
+	}
+
+	fpath := filepath.Join(SshPath, "authorized_keys")
+	if _, err := os.Stat(fpath); os.IsNotExist(err) {
+		return saveAuthorizedKeyFile(keys...)
+	}
+	if err := os.Remove(fpath); err != nil {
+		return err
+	}
+	return saveAuthorizedKeyFile(keys...)
+}
diff --git a/routers/admin/admin.go b/routers/admin/admin.go
index 563a9cdc41..ea50d5c4cb 100644
--- a/routers/admin/admin.go
+++ b/routers/admin/admin.go
@@ -118,6 +118,7 @@ const (
 	CLEAN_INACTIVATE_USER
 	CLEAN_REPO_ARCHIVES
 	GIT_GC_REPOS
+	SYNC_SSH_AUTHORIZED_KEY
 )
 
 func Dashboard(ctx *middleware.Context) {
@@ -144,6 +145,9 @@ func Dashboard(ctx *middleware.Context) {
 		case GIT_GC_REPOS:
 			success = ctx.Tr("admin.dashboard.git_gc_repos_success")
 			err = models.GitGcRepos()
+		case SYNC_SSH_AUTHORIZED_KEY:
+			success = ctx.Tr("admin.dashboard.resync_all_sshkeys_success")
+			err = models.RewriteAllPublicKeys()
 		}
 
 		if err != nil {
diff --git a/templates/admin/dashboard.tmpl b/templates/admin/dashboard.tmpl
index 8d17c360b0..b570517536 100644
--- a/templates/admin/dashboard.tmpl
+++ b/templates/admin/dashboard.tmpl
@@ -48,6 +48,11 @@
                                                 <td>{{.i18n.Tr "admin.dashboard.git_gc_repos"}}</td>
                                                 <td><i class="fa fa-caret-square-o-right"></i> <a href="{{AppSubUrl}}/admin?op=4">{{.i18n.Tr "admin.dashboard.operation_run"}}</a></td>
                                             </tr>
+                                            <tr>
+                                                <td>{{.i18n.Tr "admin.dashboard.resync_all_sshkeys"}}</td>
+                                                <td><i class="fa fa-caret-square-o-right"></i> <a href="{{AppSubUrl}}/admin?op=5">{{.i18n.Tr "admin.dashboard.operation_run"}}</a></td>
+                                            </tr>
+
                                         </tbody>
                                     </table>
                                 </div>