Men with oversized breasts should look for the cause before treatment. If it is caused by hormonal changes, it can be observed first; if it is caused by fat accumulation, it can be exercised appropriately; if it is caused by breast disease, it should seek medical treatment to find the cause before treatment. 1. Hormonal changes: If men are in puberty, hormonal changes will occur in their bodies, which may lead to breast development and may result in oversized breasts, which can generally be observed first and can be gradually recovered after puberty; 2. Fat accumulation: if men only have enlarged breasts due to fat accumulation, they can increase exercise and adjust with diet and so on; 3. Breast diseases (1) Breast hypertrophy: if men, especially older men, can develop breast hypertrophy, which can also lead to chest enlargement, they should consult with regular hospitals and use medication under the guidance of doctors. (2) Breast occupying lesions: if men’s chest appear breast hyperplasia, breast tumor and other diseases, at this time, the lump will also feel chest hypertrophy, at this time, should consult the doctor in time, to make clear whether there is a malignant lesion, and then decide the appropriate treatment plan.