Is there any way to know whether the other party has deleted me?

If you want to know whether the other party has deleted you from their contact information, you need to check your contact information. If you are the phone number, then I'm sorry, there is no way, you know, or there is only one way, that is, when you call him, can he call you by name all at once? If you can call it out, it means that he has not deleted it. If you can't call it out, then it is 90% likely that your phone number has been deleted. If it is WeChat, you can send him a text message directly. If he deletes it, your text message will not be sent, because after he deletes you, he will not be able to accept your WeChat message.