diff --git a/autowsgr/ops/decisive/handlers.py b/autowsgr/ops/decisive/handlers.py
index b307f446..738f280c 100644
--- a/autowsgr/ops/decisive/handlers.py
+++ b/autowsgr/ops/decisive/handlers.py
@@ -122,7 +122,11 @@ def _handle_enter_map(self) -> None:
 
         if entry_status == DecisiveEntryStatus.REFRESH:
             _log.info('[决战] 检测到「重置关卡」状态，执行章节重置')
-            self._battle_page.reset_chapter()
+            reset_success = self._battle_page.reset_chapter()
+            if not reset_success:
+                # 重置不成功是因为需要解装
+                self._state.phase = DecisivePhase.DOCK_FULL
+                return
             # 重置后重新检测入口状态
             entry_status = self._battle_page.detect_entry_status()
 
diff --git a/autowsgr/ui/decisive/battle_page.py b/autowsgr/ui/decisive/battle_page.py
index 71fbc780..4c7c6f7b 100644
--- a/autowsgr/ui/decisive/battle_page.py
+++ b/autowsgr/ui/decisive/battle_page.py
@@ -18,6 +18,7 @@
 import time
 from typing import TYPE_CHECKING
 
+from autowsgr.image_resources import Templates
 from autowsgr.infra.logger import get_logger
 from autowsgr.types import DecisiveEntryStatus, PageName
 from autowsgr.ui.utils import click_and_wait_for_page, confirm_operation
@@ -409,7 +410,7 @@ def detect_entry_status(
 
     # ── 章节重置 ─────────────────────────────────────────────────────────
 
-    def reset_chapter(self) -> None:
+    def reset_chapter(self) -> bool:
         """使用磁盘重置当前章节。
 
         在决战总览页点击"重置关卡"按钮并确认操作。
@@ -423,6 +424,15 @@ def reset_chapter(self) -> None:
         _log.info('[决战] 决战页面 → 重置关卡')
         self._ctrl.click(*CLICK_RESET_CHAPTER)
         time.sleep(1.0)
+        screen = self._ctrl.screenshot()
+        if ImageChecker.template_exists(
+            screen,
+            Templates.Build.SHIP_FULL_DEPOT,
+            confidence=0.8,
+        ):
+            _log.warning('[决战] 重置关卡时检测到船坞已满')
+            return False
         confirm_operation(self._ctrl, must_confirm=True, timeout=5.0)
         time.sleep(1.0)  # 防止后续 stage 识别出问题
         _log.info('[决战] 决战关卡重置完成')
+        return True