diff --git a/tasks/item/inventory.py b/tasks/item/inventory.py
index 347b893bf..db86cbc48 100644
--- a/tasks/item/inventory.py
+++ b/tasks/item/inventory.py
@@ -4,10 +4,9 @@ from scipy import signal
 
 from module.base.base import ModuleBase
 from module.base.button import ButtonWrapper
-from module.base.decorator import cached_property, del_cached_property
+from module.base.decorator import cached_property
 from module.base.timer import Timer
 from module.base.utils import Lines, area_center, area_offset, color_similarity_2d
-from module.exception import ScriptError
 from module.logger import logger
 
 
@@ -71,6 +70,8 @@ class InventoryManager:
     ERROR_LINES_TOLERANCE = (-10, 10)
     COINCIDENT_POINT_ENCOURAGE_DISTANCE = 1.
 
+    MAXIMUM_ITEMS = 30
+
     def __init__(self, main: ModuleBase, inventory: ButtonWrapper):
         """
         max_count: expected max count of this inventory page
@@ -248,7 +249,10 @@ class InventoryManager:
         else:
             self.selected = selected[0]
 
-        logger.info(f'Inventory: {len(self.items)} items, selected {self.selected}')
+        count = len(self.items)
+        logger.info(f'Inventory: {count} items, selected {self.selected}')
+        if count > self.MAXIMUM_ITEMS:
+            logger.warning('Too many inventory items detected')
 
     def get_row_first(self, row=1, first=0) -> InventoryItem | None:
         """
@@ -292,12 +296,9 @@ class InventoryManager:
     def select(self, item, skip_first_screenshot=True):
         logger.info(f'Inventory select {item}')
         if isinstance(item, InventoryItem):
-            pass
+            loca = item.loca
         else:
-            try:
-                item = self.items[item]
-            except KeyError:
-                raise ScriptError(f'Inventory select {item} but is not in current items')
+            loca = item
 
         interval = Timer(2, count=6)
         while 1:
@@ -306,8 +307,16 @@ class InventoryManager:
             else:
                 self.main.device.screenshot()
 
+            self.update()
+            if len(self.items) > self.MAXIMUM_ITEMS:
+                continue
+            try:
+                item = self.items[loca]
+            except KeyError:
+                logger.warning(f'Item {loca} is not in inventory, cannot select')
+                continue
+
             # End
-            del_cached_property(item, 'is_selected')
             if item.is_selected:
                 logger.info('Inventory item selected')
                 break
@@ -315,8 +324,7 @@ class InventoryManager:
             if interval.reached():
                 self.main.device.click(item)
                 interval.reset()
-
-        self.update()
+                continue
 
     def wait_selected(self, skip_first_screenshot=True):
         """
@@ -334,8 +342,10 @@ class InventoryManager:
                 self.main.device.screenshot()
 
             self.update()
-            if self.selected is not None:
-                return True
             if timeout.reached():
                 logger.warning('Wait inventory selected timeout')
                 return False
+            if len(self.items) > self.MAXIMUM_ITEMS:
+                continue
+            if self.selected is not None:
+                return True