diff --git a/TOOLS.md b/TOOLS.md
index fb121df..185a02a 100644
--- a/TOOLS.md
+++ b/TOOLS.md
@@ -128,14 +128,16 @@ $SKILL_DIR/scripts/calendar.sh reply --envelope-id 42 --action decline \
 # 待办管理
 $SKILL_DIR/scripts/calendar.sh todo add --summary "跟进报销" --due "2026-03-25" --priority high
 $SKILL_DIR/scripts/calendar.sh todo list
+$SKILL_DIR/scripts/calendar.sh todo edit --match "报销" --due "2026-03-28"
 $SKILL_DIR/scripts/calendar.sh todo complete --match "报销"
+$SKILL_DIR/scripts/calendar.sh todo delete --match "报销"
 $SKILL_DIR/scripts/calendar.sh todo check    # 每日摘要（cron）
 
 # 查看日历（检查冲突）
 khal list today 7d
 ```
 
-**支持操作**: 发送邀请 (`send`)、接受/拒绝/暂定 (`reply`)、待办管理 (`todo add/list/complete/delete/check`)
+**支持操作**: 发送邀请 (`send`)、接受/拒绝/暂定 (`reply`)、待办管理 (`todo add/list/edit/complete/delete/check`)
 **依赖**: himalaya（邮件）、vdirsyncer（CalDAV 同步）、khal（查看日历）、todoman（待办管理）
 **同步**: 发送/回复/待办变更后自动 `vdirsyncer sync`，心跳也会定期同步
 **注意**: 发送日历邀请属于对外邮件，需先确认
diff --git a/skills/calendar/SKILL.md b/skills/calendar/SKILL.md
index 0765caf..c611c9d 100644
--- a/skills/calendar/SKILL.md
+++ b/skills/calendar/SKILL.md
@@ -42,6 +42,7 @@ $SKILL_DIR/scripts/calendar.sh reply [options]
 # Manage todos
 $SKILL_DIR/scripts/calendar.sh todo add [options]
 $SKILL_DIR/scripts/calendar.sh todo list [options]
+$SKILL_DIR/scripts/calendar.sh todo edit [options]
 $SKILL_DIR/scripts/calendar.sh todo complete [options]
 $SKILL_DIR/scripts/calendar.sh todo delete [options]
 $SKILL_DIR/scripts/calendar.sh todo check
@@ -198,6 +199,23 @@ $SKILL_DIR/scripts/calendar.sh todo list           # pending only
 $SKILL_DIR/scripts/calendar.sh todo list --all      # include completed
 ```
 
+### `todo edit` — Modify a Todo
+
+```bash
+$SKILL_DIR/scripts/calendar.sh todo edit --match "保险报销" --due "2026-03-26"
+$SKILL_DIR/scripts/calendar.sh todo edit --uid "abc123@openclaw" --priority high
+$SKILL_DIR/scripts/calendar.sh todo edit --match "census" --due "2026-03-28" --priority low
+```
+
+| Flag            | Required | Description                                         |
+|-----------------|----------|-----------------------------------------------------|
+| `--uid`         | *        | Todo UID                                             |
+| `--match`       | *        | Match on summary text                                |
+| `--due`         | No       | New due date (YYYY-MM-DD)                            |
+| `--priority`    | No       | New priority: `high`, `medium`, or `low`             |
+
+\* One of `--uid` or `--match` is required. At least one edit flag must be provided.
+
 ### `todo complete` — Mark as Done
 
 ```bash
diff --git a/skills/calendar/TESTING.md b/skills/calendar/TESTING.md
index 683947b..eb4da48 100644
--- a/skills/calendar/TESTING.md
+++ b/skills/calendar/TESTING.md
@@ -188,7 +188,55 @@ $SKILL_DIR/scripts/calendar.sh todo list --all
 - [ ] Priority grouping is correct in wrapper output
 - [ ] `--all` flag works (same output when none are completed)
 
-## 10. Complete a Todo
+## 10. Edit a Todo
+
+Change the due date and priority of the test todo from step 8.
+
+```bash
+# Edit due date
+$SKILL_DIR/scripts/calendar.sh todo edit --match "Test Todo" --due "$(date -d '+5 days' +%Y-%m-%d)"
+
+# Verify change
+$SKILL_DIR/scripts/calendar.sh todo list
+```
+
+**Verify:**
+- [ ] Script exits without error
+- [ ] Output shows "Updated todo: Test Todo" with the change
+- [ ] `todo list` shows the new due date
+- [ ] `vdirsyncer sync` ran
+
+```bash
+# Edit priority
+$SKILL_DIR/scripts/calendar.sh todo edit --match "Test Todo" --priority high
+
+# Verify change
+$SKILL_DIR/scripts/calendar.sh todo list
+```
+
+**Verify:**
+- [ ] Priority changed to high
+- [ ] Todo appears under the high priority group in formatted output
+
+```bash
+# Edit multiple fields at once
+$SKILL_DIR/scripts/calendar.sh todo edit --match "Test Todo" --due "$TEST_DATE" --priority low
+```
+
+**Verify:**
+- [ ] Both due date and priority updated in one command
+
+```bash
+# Error: no matching todo
+$SKILL_DIR/scripts/calendar.sh todo edit --match "nonexistent" --due "$TEST_DATE"
+# Should print error and exit non-zero
+
+# Error: no fields to edit
+$SKILL_DIR/scripts/calendar.sh todo edit --match "Test Todo"
+# Should print "Nothing to change" message
+```
+
+## 11. Complete a Todo
 
 ```bash
 $SKILL_DIR/scripts/calendar.sh todo complete --match "Test Todo"
@@ -200,7 +248,7 @@ $SKILL_DIR/scripts/calendar.sh todo complete --match "Test Todo"
 - [ ] `$SKILL_DIR/scripts/calendar.sh todo list --all` — appears as completed (with checkmark)
 - [ ] `vdirsyncer sync` ran
 
-## 11. Delete a Todo
+## 12. Delete a Todo
 
 Create a second test todo, then delete it.
 
@@ -223,7 +271,7 @@ $SKILL_DIR/scripts/calendar.sh todo delete --match "Delete Me"
 - [ ] `todo list` (todoman) does not show "Delete Me Todo"
 - [ ] `vdirsyncer sync` ran
 
-## 12. Todo Check (Cron Output)
+## 13. Todo Check (Cron Output)
 
 ```bash
 # Create a test todo
@@ -245,7 +293,7 @@ $SKILL_DIR/scripts/calendar.sh todo check
 # Should produce no output
 ```
 
-## 13. Regression: Existing Invite Commands
+## 14. Regression: Existing Invite Commands
 
 Verify the rename didn't break VEVENT flow.
 
diff --git a/skills/calendar/scripts/cal_tool.py b/skills/calendar/scripts/cal_tool.py
index 9326960..00d6bd5 100644
--- a/skills/calendar/scripts/cal_tool.py
+++ b/skills/calendar/scripts/cal_tool.py
@@ -10,6 +10,7 @@ Subcommands:
     python calendar.py reply [options]         # accept/decline/tentative
     python calendar.py todo add [options]      # create a VTODO task
     python calendar.py todo list [options]     # list pending tasks
+    python calendar.py todo edit [options]     # edit a task's fields
     python calendar.py todo complete [options] # mark task as done
     python calendar.py todo delete [options]   # remove a task
     python calendar.py todo check              # daily digest for cron
@@ -600,6 +601,58 @@ def cmd_todo_complete(args):
     _sync_calendar()
 
 
+def _find_todo(uid="", match=""):
+    """Find a single todo by UID or summary match. Returns (todoman_id, todo_dict)."""
+    todos = _todoman_list_json("--sort", "due")
+    if uid:
+        matches = [t for t in todos if uid in (t.get("uid") or "")]
+        if not matches:
+            print(f"Error: No todo with UID '{uid}'", file=sys.stderr)
+            sys.exit(1)
+    elif match:
+        matches = [t for t in todos if match in (t.get("summary") or "")]
+        if not matches:
+            print(f"Error: No todo matching '{match}'", file=sys.stderr)
+            sys.exit(1)
+        if len(matches) > 1:
+            print(f"Error: Multiple todos match '{match}':", file=sys.stderr)
+            for t in matches:
+                print(f"  - {t.get('summary')} (uid: {t.get('uid')})", file=sys.stderr)
+            sys.exit(1)
+    else:
+        print("Error: --uid or --match is required", file=sys.stderr)
+        sys.exit(1)
+    return matches[0]["id"], matches[0]
+
+
+def cmd_todo_edit(args):
+    """Edit a todo's fields via todoman."""
+    todo_id, matched = _find_todo(uid=args.uid, match=args.match)
+
+    # Build todoman edit command args
+    todo_args = []
+    changes = []
+
+    if args.due:
+        todo_args += ["--due", args.due]
+        changes.append(f"due -> {args.due}")
+    if args.priority:
+        todo_args += ["--priority", args.priority]
+        prio_label = PRIORITY_LABELS.get(PRIORITY_MAP.get(args.priority, 5), "中")
+        changes.append(f"priority -> {prio_label}")
+
+    if not changes:
+        print("Nothing to change. Specify at least one of --due, --priority.")
+        return
+
+    # Run todoman edit (non-interactive)
+    _run_todoman("edit", str(todo_id), "--no-interactive", *todo_args)
+    print(f"Updated todo: {matched.get('summary')}")
+    for c in changes:
+        print(f"  {c}")
+    _sync_calendar()
+
+
 def cmd_todo_delete(args):
     """Delete a todo via todoman."""
     if args.uid:
@@ -688,6 +741,13 @@ def main():
     comp_p.add_argument("--uid", default="", help="Todo UID")
     comp_p.add_argument("--match", default="", help="Fuzzy match on summary")
 
+    # todo edit
+    edit_p = todo_sub.add_parser("edit", help="Edit a todo's fields")
+    edit_p.add_argument("--uid", default="", help="Todo UID")
+    edit_p.add_argument("--match", default="", help="Fuzzy match on summary")
+    edit_p.add_argument("--due", default="", help="New due date (YYYY-MM-DD)")
+    edit_p.add_argument("--priority", default="", choices=["", "high", "medium", "low"], help="New priority")
+
     # todo delete
     del_p = todo_sub.add_parser("delete", help="Delete a todo")
     del_p.add_argument("--uid", default="", help="Todo UID")
@@ -709,6 +769,8 @@ def main():
             cmd_todo_list(args)
         elif args.todo_command == "complete":
             cmd_todo_complete(args)
+        elif args.todo_command == "edit":
+            cmd_todo_edit(args)
         elif args.todo_command == "delete":
             cmd_todo_delete(args)
         elif args.todo_command == "check":
diff --git a/skills/calendar/scripts/calendar.sh b/skills/calendar/scripts/calendar.sh
index cb178de..0f50e5f 100755
--- a/skills/calendar/scripts/calendar.sh
+++ b/skills/calendar/scripts/calendar.sh
@@ -6,6 +6,7 @@
 #   ./calendar.sh reply [options]         # accept/decline/tentative
 #   ./calendar.sh todo add [options]      # create a todo
 #   ./calendar.sh todo list [options]     # list pending todos
+#   ./calendar.sh todo edit [options]     # edit a todo's fields
 #   ./calendar.sh todo complete [options] # mark todo as done
 #   ./calendar.sh todo delete [options]   # remove a todo
 #   ./calendar.sh todo check              # daily digest for cron