diff --git a/src/models/RolePlugin.lua b/src/models/RolePlugin.lua
index 95c996d..1697792 100644
--- a/src/models/RolePlugin.lua
+++ b/src/models/RolePlugin.lua
@@ -444,7 +444,7 @@ function RolePlugin.bind(Role)
 	function Role:costItems(itemCountT, params)
 		local pms = clone(params or {})
 		for _, v in pairs(itemCountT) do
-			if v <= 0 then return false end
+			if v < 0 then return false end
 		end
 
 		if itemCountT[ItemId.Diamond] then  --优先扣除钻石
--
libgit2 0.21.2