diff --git a/packages/legacy-common/src/index.ts b/packages/legacy-common/src/index.ts
index 85a0b52..d8b82c2 100644
--- a/packages/legacy-common/src/index.ts
+++ b/packages/legacy-common/src/index.ts
@@ -1,2 +1 @@
 export * from './eventEmitter';
-export * from './utils';
diff --git a/packages/legacy-common/src/utils.ts b/packages/legacy-common/src/utils.ts
deleted file mode 100644
index 7e8a0a3..0000000
--- a/packages/legacy-common/src/utils.ts
+++ /dev/null
@@ -1,47 +0,0 @@
-import { EVENT_KEY_CODE_MAP } from '@motajs/client-base';
-
-export function flipBinary(num: number, col: number) {
-    const n = 1 << col;
-    if (num & n) return num & ~n;
-    else return num | n;
-}
-
-/**
- * 根据布尔值数组转换成一个二进制数
- * @param arr 要转换的布尔值数组
- */
-export function generateBinary(arr: boolean[]) {
-    let num = 0;
-    arr.forEach((v, i) => {
-        if (v) {
-            num |= 1 << i;
-        }
-    });
-    return num;
-}
-
-/**
- * 删除数组内的某个项，返回删除后的数组
- * @param arr 要操作的数组
- * @param ele 要删除的项
- */
-export function deleteWith<T>(arr: T[], ele: T): T[] {
-    const index = arr.indexOf(ele);
-    if (index === -1) return arr;
-    arr.splice(index, 1);
-    return arr;
-}
-
-export function spliceBy<T>(arr: T[], from: T): T[] {
-    const index = arr.indexOf(from);
-    if (index === -1) return [];
-    return arr.splice(index);
-}
-
-/**
- * 获取事件中的keycode对应的键
- * @param key 要获取的键
- */
-export function keycode(key: number) {
-    return EVENT_KEY_CODE_MAP[key];
-}