diff --git a/src/adv/Adv.lua b/src/adv/Adv.lua
index e1bc4fe..988c336 100644
--- a/src/adv/Adv.lua
+++ b/src/adv/Adv.lua
@@ -829,7 +829,7 @@ function Adv:randomMapId(chapterId, level)
 		local temp = csvdb["mapCsv"][mapId]
 		if temp and not lastMapIds[mapId] then
 			if AdvCommon.checkIsIn(level, temp.leveltype, temp.levellimit) then
-				table.insert(pool, mapId)
+				pool[mapId] = {showup = temp.showup}
 			end
 		end
 	end
@@ -837,7 +837,7 @@ function Adv:randomMapId(chapterId, level)
 		error("mapIds is empty!")
 		return 
 	end
-	return pool[math.randomInt(1, #pool)]
+	return math.randWeight(pool, "showup")
 end
 
 -- log long1 字段被征用！！！
--
libgit2 0.21.2