diff --git a/src/main/java/run/halo/app/controller/admin/api/JournalCommentController.java b/src/main/java/run/halo/app/controller/admin/api/JournalCommentController.java
index 1207eee59d087192dae358aa5205515fc13000ea..2744e67ab42c94cd2a62eb534391108a964cb538 100644
--- a/src/main/java/run/halo/app/controller/admin/api/JournalCommentController.java
+++ b/src/main/java/run/halo/app/controller/admin/api/JournalCommentController.java
@@ -34,6 +34,7 @@ import run.halo.app.service.OptionService;
  * Journal comment controller.
  *
  * @author johnniang
+ * @author guqing
  * @date 2019-04-25
  */
 @RestController
@@ -106,6 +107,16 @@ public class JournalCommentController {
         return journalCommentService.convertTo(updatedJournalComment);
     }
 
+    @PutMapping("/{commentId:\\d+}")
+    @ApiOperation("Updates a journal comment by comment id")
+    public BaseCommentDTO updateCommentBy(@PathVariable Long commentId,
+        @RequestBody JournalCommentParam journalCommentParam) {
+        JournalComment commentToUpdate = journalCommentService.getById(commentId);
+        journalCommentParam.update(commentToUpdate);
+
+        return journalCommentService.convertTo(journalCommentService.update(commentToUpdate));
+    }
+
     @DeleteMapping("{commentId:\\d+}")
     @ApiOperation("Deletes comment permanently and recursively")
     public BaseCommentDTO deleteBy(@PathVariable("commentId") Long commentId) {