diff --git a/lua/app/userdata/runes/runes_data.lua b/lua/app/userdata/runes/runes_data.lua
index 394c714d..5fc7161a 100644
--- a/lua/app/userdata/runes/runes_data.lua
+++ b/lua/app/userdata/runes/runes_data.lua
@@ -94,12 +94,14 @@ end
 
 -- 获取到下一档的总经验
 function RunesData:getNextLevelTotalExp()
+    local nextExp
     local cfg = self:getLevelConfig()[self:getLevel() + 1]
     if cfg then
-        return cfg.cost and cfg.cost - self:getLevelConfig()[self:getLevel()].cost or 0
+        nextExp = cfg.cost or 0
     end
+    local curExp = self:getLevelConfig()[self:getLevel()].cost or 0
 
-    return nil
+    return nextExp - curExp
 end
 
 -- 获取相应铸台等级的品质概率