Abstract: In order to ensure the safe use of 5G technology in mines, and to promote the rapid development of mobile communication in coal mines, the application status of mobile communication system in mines was discussed. The relevant standards of explosive environment were studied, the calculation method of threshold power was analyzed, and the calculation process of base station transmitting threshold power with and without antenna stacking is discussed separately. The electromagnetic compatibility evaluation standard and the safety evaluation method of mining 5G system are analyzed. The calculation and testing methods for the safety performance of mining 5G products are proposed in terms of transmission threshold power parameters, electromagnetic compatibility, core network inspection, system networking mode discrimination, communication category, system inspection, antenna parameter inspection, etc. These standardize the production of 5G products for mining and ensure the safety of underground personnel and resource equipment.