Can the employees of the communication company see the content of the user's short message?

The authority is different, depending on which department he works in Even if you put aside moral factors and professional ethics, you can only know your contact number, and you will never know your voice and text messages. Moreover, it is illegal to disclose user privacy to the outside world.

He doesn't need to read your message, does he? The public security organ did not listen until it noticed the person when handling the case, and the content of the short message was basically found after getting the suspect's mobile phone.