diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4e9c4790..7ffc66fa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/lang/zh-CN/
 
 ## [Unreleased]
 
+### Fixed
+
+- 修复议题已经被关闭时无法正确设置为 not_planned 的问题
+
 ## [4.2.6] - 2025-01-22
 
 ### Fixed
diff --git a/src/plugins/github/handlers/issue.py b/src/plugins/github/handlers/issue.py
index e9ecc528..ef1dd03d 100644
--- a/src/plugins/github/handlers/issue.py
+++ b/src/plugins/github/handlers/issue.py
@@ -69,7 +69,9 @@ async def close_issue(
         if issue_number is None:
             issue_number = self.issue_number
 
-        if self.issue and self.issue.state == "open":
+        if (
+            self.issue and self.issue.state == "open"
+        ) or self.issue.state_reason != reason:
             await super().close_issue(reason, issue_number)
 
     async def create_pull_request(
diff --git a/src/plugins/github/plugins/resolve/__init__.py b/src/plugins/github/plugins/resolve/__init__.py
index 183f2dc1..36a2150e 100644
--- a/src/plugins/github/plugins/resolve/__init__.py
+++ b/src/plugins/github/plugins/resolve/__init__.py
@@ -66,8 +66,8 @@ async def handle_pr_close(
     handler: IssueHandler = Depends(get_related_issue_handler),
 ) -> None:
     async with bot.as_installation(installation_id):
-        if handler.issue.state == "open":
-            reason = "completed" if event.payload.pull_request.merged else "not_planned"
+        reason = "completed" if event.payload.pull_request.merged else "not_planned"
+        if handler.issue.state == "open" or handler.issue.state_reason != reason:
             await handler.close_issue(reason)
         logger.info(f"议题 #{handler.issue.number} 已关闭")
 
diff --git a/tests/plugins/github/resolve/test_resolve_close_issue.py b/tests/plugins/github/resolve/test_resolve_close_issue.py
index 0e17768f..826f9cc1 100644
--- a/tests/plugins/github/resolve/test_resolve_close_issue.py
+++ b/tests/plugins/github/resolve/test_resolve_close_issue.py
@@ -12,7 +12,6 @@
     GitHubApi,
     MockIssue,
     assert_subprocess_run_calls,
-    generate_issue_body_bot,
     generate_issue_body_remove,
     get_github_bot,
     mock_subprocess_run_with_side_effect,
@@ -40,11 +39,84 @@ async def test_resolve_close_issue(
     mock_issues_resp = mocker.MagicMock()
     mock_issues_resp.parsed_data = mock_issue
 
-    mock_publish_issue = MockIssue(body=generate_issue_body_bot(), number=100).as_mock(
-        mocker
+    async with app.test_matcher() as ctx:
+        adapter, bot = get_github_bot(ctx)
+
+        event = get_mock_event(PullRequestClosed)
+        event.payload.pull_request.labels = get_pr_labels(["Publish", "Bot"])
+        event.payload.pull_request.merged = False
+
+        should_call_apis(
+            ctx,
+            [
+                GitHubApi(
+                    api="rest.apps.async_get_repo_installation",
+                    result=mock_installation,
+                ),
+                GitHubApi(
+                    api="rest.issues.async_get",
+                    result=mock_issues_resp,
+                ),
+                GitHubApi(
+                    api="rest.issues.async_update",
+                    result=mock_issues_resp,
+                ),
+            ],
+            snapshot(
+                {
+                    0: {"owner": "he0119", "repo": "action-test"},
+                    1: {"owner": "he0119", "repo": "action-test", "issue_number": 76},
+                    2: {
+                        "owner": "he0119",
+                        "repo": "action-test",
+                        "issue_number": 76,
+                        "state": "closed",
+                        "state_reason": "not_planned",
+                    },
+                }
+            ),
+        )
+        ctx.receive_event(bot, event)
+        ctx.should_pass_rule(pr_close_matcher)
+
+    # 测试 git 命令
+    assert_subprocess_run_calls(
+        mock_subprocess_run,
+        [
+            ["git", "config", "--global", "safe.directory", "*"],
+            ["git", "push", "origin", "--delete", "publish/issue76"],
+        ],
+    )
+
+    assert not mocked_api["homepage"].called
+    mock_resolve_conflict_pull_requests.assert_not_awaited()
+
+
+async def test_resolve_close_issue_already_closed(
+    app: App,
+    mocker: MockerFixture,
+    mock_installation: MagicMock,
+    mocked_api: MockRouter,
+) -> None:
+    """测试议题已经关闭的情况
+
+    需要再关闭一次议题，设置为 not_planned
+    """
+    from src.plugins.github.plugins.resolve import pr_close_matcher
+
+    mock_subprocess_run = mock_subprocess_run_with_side_effect(mocker)
+    mock_resolve_conflict_pull_requests = mocker.patch(
+        "src.plugins.github.plugins.resolve.resolve_conflict_pull_requests"
     )
-    mock_publish_issue_resp = mocker.MagicMock()
-    mock_publish_issue_resp.parsed_data = mock_publish_issue
+
+    mock_issue = MockIssue(
+        body=generate_issue_body_remove(type="Bot"),
+        number=76,
+        state="closed",
+        state_reason="completed",
+    ).as_mock(mocker)
+    mock_issues_resp = mocker.MagicMock()
+    mock_issues_resp.parsed_data = mock_issue
 
     async with app.test_matcher() as ctx:
         adapter, bot = get_github_bot(ctx)
diff --git a/tests/plugins/github/utils.py b/tests/plugins/github/utils.py
index f6221d4c..a128d999 100644
--- a/tests/plugins/github/utils.py
+++ b/tests/plugins/github/utils.py
@@ -101,7 +101,7 @@ def generate_issue_body_plugin_skip_test(
 def generate_issue_body_plugin_test_button(body: str, selected: bool):
     from src.plugins.github.plugins.publish.constants import PLUGIN_TEST_BUTTON_TIPS
 
-    return f"""{body}\n\n### 插件测试\n\n- [{'x' if selected else ' '}] {PLUGIN_TEST_BUTTON_TIPS}"""
+    return f"""{body}\n\n### 插件测试\n\n- [{"x" if selected else " "}] {PLUGIN_TEST_BUTTON_TIPS}"""
 
 
 def generate_issue_body_remove(
@@ -200,6 +200,7 @@ class MockIssue:
     number: int = 80
     title: str = "Bot: test"
     state: Literal["open", "closed"] = "open"
+    state_reason: None | Literal["completed", "reopened", "not_planned"] = None
     body: str = field(default_factory=lambda: MockBody("bot").generate())
     pull_request: Any = None
     user: MockUser = field(default_factory=MockUser)