Once you've set your WeChat ID, you won't be able to hide it from your profile and it only can be changed once per year. Each WeChat user has this unique ID within the app to help you easily log in to WeChat and allow your friends to add you easily. If you haven't created a WeChat ID for your account, your friends can see your original WeChat ID which is automatically generated by WeChat.

Note：Set a restriction to prevent other people from friending you through your WeChat ID. Enter WeChar > tap Me > Settings > Privacy > Methods for Friending Me > toggle off WeChat ID.