Men generally consider that most of them are caused by breast development, and few of them are caused by lymphadenitis. In case of the above situations, it is recommended to go to the general surgery department as soon as possible to improve the relevant examinations, such as B ultrasound and blood routine examination. In serious cases, six sex hormones need to be checked, and then the next plan can be carried out according to the results. Pay attention to rest and diet at ordinary times. If it is male breast development, it can be observed regularly as long as it does not affect the beauty. If it is lymphadenitis, oral drug control is required.