diff --git a/uni_modules/uni-scss/styles/tools/functions.scss b/uni_modules/uni-scss/styles/tools/functions.scss
new file mode 100644
index 0000000..ac6f63e
--- /dev/null
+++ b/uni_modules/uni-scss/styles/tools/functions.scss
@@ -0,0 +1,19 @@
+// 合并 map
+@function map-deep-merge($parent-map, $child-map){
+	$result: $parent-map;
+	@each $key, $child in $child-map {
+		$parent-has-key: map-has-key($result, $key);
+		$parent-value: map-get($result, $key);
+		$parent-type: type-of($parent-value);
+		$child-type: type-of($child);
+		$parent-is-map: $parent-type == map;
+		$child-is-map: $child-type == map;
+			
+		@if (not $parent-has-key) or ($parent-type != $child-type) or (not ($parent-is-map and $child-is-map)){
+			$result: map-merge($result, ( $key: $child ));
+		}@else {
+			$result: map-merge($result, ( $key: map-deep-merge($parent-value, $child) ));
+		}
+	}
+	@return $result;
+};