diff --git a/lua/app/module/battle/controller/battle_controller.lua b/lua/app/module/battle/controller/battle_controller.lua
index 09004fe5..13ea89ec 100644
--- a/lua/app/module/battle/controller/battle_controller.lua
+++ b/lua/app/module/battle/controller/battle_controller.lua
@@ -2216,26 +2216,34 @@ function BattleController:resetGrids(posList)
         return
     end
 
-    local canRandomElmentList = {}
+    if not self.canRandomElmentList then
+        self.canRandomElmentList = {}
+    end
+
+    for i = #self.canRandomElmentList, 1, -1 do
+        table.remove(self.canRandomElmentList)
+    end
+
+    local elementCount = 0
     for typeName, typeNum in pairs(BattleConst.ELEMENT_TYPE) do
         if not lockElementMap[typeNum] and  not self:getSealElementType()[typeNum] and self.battleData:getSkillEntityByElement(typeNum) then
-            table.insert(canRandomElmentList, typeNum)
+            table.insert(self.canRandomElmentList, typeNum)
+            elementCount = elementCount + 1
         end
     end
 
-    if not canRandomElmentList[1] then
+    if elementCount <= 0 then
         return
     end
 
-    local elementCount = #canRandomElmentList
-    local mainElement = canRandomElmentList[math.random(1, elementCount)]
+    local mainElement = self.canRandomElmentList[math.random(1, elementCount)]
 
     for typeNum, _ in pairs(lockElementMap) do
-        table.insert(canRandomElmentList, typeNum)
+        table.insert(self.canRandomElmentList, typeNum)
         elementCount = elementCount + 1
     end
 
-    local resetPosInfo = self:_dealResetGridsDataFunc2(useMap, emptySnapList, mainElement, backupSkill, keepSnapList, posMap, canRandomElmentList, elementCount, lockElementMap)
+    local resetPosInfo = self:_dealResetGridsDataFunc2(useMap, emptySnapList, mainElement, backupSkill, keepSnapList, posMap, self.canRandomElmentList, elementCount, lockElementMap)
 
     return resetPosInfo
 end