diff --git a/src/views/system/role/index.vue b/src/views/system/role/index.vue
index ffb975e..ea522a3 100644
--- a/src/views/system/role/index.vue
+++ b/src/views/system/role/index.vue
@@ -816,8 +816,9 @@ async function handleReset() {
 
 // 行选择变化
 function handleRowSelectionChange(rowKeys: (string | number)[]) {
-  const numericKeys = rowKeys.map(key => typeof key === 'string' ? Number.parseInt(key) : key)
-  selectedRows.value = tableData.value.filter(row => numericKeys.includes(row.roleId))
+  // 保持字符串格式避免精度丢失
+  const stringKeys = rowKeys.map(key => String(key))
+  selectedRows.value = tableData.value.filter(row => stringKeys.includes(String(row.roleId)))
 }
 
 // 批量修改（选中一个角色进行修改）
@@ -1078,9 +1079,8 @@ async function handleConfirmAssignMenu() {
     // 确保选中子菜单时父菜单也被包含
     const completeMenuIds = ensureParentMenusIncluded(checkedKeys.value, menuData.value)
 
-    // 将字符串格式的key转换为数字格式发送给后端
-    const menuIds = completeMenuIds.map(key => Number.parseInt(String(key)))
-    const response = await saveRoleMenuPermission(currentAssignRole.value.roleId, menuIds)
+    // 保持字符串格式避免精度丢失
+    const response = await saveRoleMenuPermission(String(currentAssignRole.value.roleId), completeMenuIds)
 
     if (response.isSuccess) {
       coiMsgSuccess('菜单权限分配成功')