diff --git a/CHANGELOG.md b/CHANGELOG.md
index f3bbc08..269de69 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## v1.2.0
+
+- feat: add outputs `comment-id`.
+
 ## v1.1.0
 
 - feat: add `number`.
diff --git a/README.md b/README.md
index 2863b86..0b163f0 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,7 @@
 
 ![](https://img.shields.io/github/workflow/status/actions-cool/maintain-one-comment/CI?style=flat-square)
 [![](https://img.shields.io/badge/marketplace-maintain--one--comment-blueviolet?style=flat-square)](https://github.com/marketplace/actions/maintain-one-comment)
+[![](https://img.shields.io/github/v/release/actions-cool/maintain-one-comment?style=flat-square&color=orange)](https://github.com/actions-cool/maintain-one-comment/releases)
 
 Maintain just one comment in Issue and PR. 
 
@@ -41,6 +42,8 @@ jobs:
           body-include: '<!-- Created by actions-cool/maintain-one-comment -->'
 ```
 
+### Inputs
+
 | Name | Desc | Type | Required |
 | -- | -- | -- | -- |
 | token | GitHub token | string | ✖ |
@@ -53,9 +56,14 @@ jobs:
 
 - `number`: When no input, it will be the issue or PR number that triggered. When input, it is the highest priority
 
+### Outputs
+
+- `comment-id`: Return the ID of create or updated comment.
+  - About `comment-id` use, can refer: https://github.com/actions-cool/issues-helper
+
 ## Note
 
-- When PR come from fork, it requires `pull_request_target`. When use `pull_request_target`, must [read](https://docs.github.com/en/actions/reference/events-that-trigger-workflows#pull_request_target)
+- When PR come from fork, it requires `pull_request_target` to comment (Reasons for github built-in permissions). When use `pull_request_target`, must [read](https://docs.github.com/en/actions/reference/events-that-trigger-workflows#pull_request_target)
 
 ## Emoji List
 
diff --git a/action.yml b/action.yml
index 47f3c67..6f15166 100644
--- a/action.yml
+++ b/action.yml
@@ -28,6 +28,10 @@ inputs:
   body-include:
     description: Comment body filter.
 
+outputs:
+  comment-id:
+    description: 'Create or update comment ID'
+
 runs:
   using: 'node12'
   main: 'dist/index.js'
diff --git a/dist/index.js b/dist/index.js
index 5b23377..832afaf 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -7113,6 +7113,7 @@ async function run() {
         body,
       });
       core.info(`Actions: [create-comment][${body}] success!`);
+      core.setOutput('comment-id', data.id);
 
       if (emojis) {
         dealStringToArr(emojis).forEach(async item => {
@@ -7149,6 +7150,7 @@ async function run() {
       }
 
       await octokit.issues.updateComment(params);
+      core.setOutput('comment-id', commentId);
       core.info(`Actions: [update-comment][${params.body}] success!`);
     } else {
       let length = comments.length;
diff --git a/package.json b/package.json
index ba34024..7d20e29 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "maintain-one-comment",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "private": true,
   "description": "Maintain just one comment in Issue and PR.",
   "main": "src/main.js",
diff --git a/src/main.js b/src/main.js
index 4f89060..ca54e85 100644
--- a/src/main.js
+++ b/src/main.js
@@ -69,6 +69,7 @@ async function run() {
         body,
       });
       core.info(`Actions: [create-comment][${body}] success!`);
+      core.setOutput('comment-id', data.id);
 
       if (emojis) {
         dealStringToArr(emojis).forEach(async item => {
@@ -105,6 +106,7 @@ async function run() {
       }
 
       await octokit.issues.updateComment(params);
+      core.setOutput('comment-id', commentId);
       core.info(`Actions: [update-comment][${params.body}] success!`);
     } else {
       let length = comments.length;