Gynecomastia, also known as gynecomastia or gynecomastia, is an abnormal enlargement and development of male breast tissue. The disease is a serious impediment to male physical and mental health, and its incidence has gradually increased in recent years, receiving increasing attention from clinicians. From a surgical point of view, it should be considered a persistent enlargement because, more than 65% of normally developing adolescent boys also suffer from transient pubertal breast development. It is because it is a persistent enlargement that compels patients to seek treatment because, compared to a normally developing breast, an enlarged feminized breast is a significant physical defect. From a treatment standpoint, there are 3 different types of male breast feminization: adolescent male breast feminization, geriatric male breast feminization, and pathological male breast feminization. In both obese adolescent and older males, liposuction will be very effective if the breast enlargement is the result of fat accumulation. In fact, the majority of gynecomastia patients have both fibrous breast masses in the deep areola and surrounding fat accumulation, and liposuction with fibrous mass excision can give the patient a better postoperative chest wall appearance. Liposuction, as the name implies, is the extraction of excess fat from under the breasts of patients with gynecomastia, which reduces the bulge in the areola area and restores the normal shape of the chest. During surgery, a surgical incision of about 1 cm is made at the edge of the areola (where the pigmented areola skin is attached to the normal chest skin and the postoperative scar is easily hidden), swelling solution is injected, and liposuction is performed with a 3-4 mm liposuction tube. The postoperative wound can be glued with bioprotein adhesive and a Band-Aid applied externally without stitch removal, and all activities can be resumed after 1 week. Although patients occasionally present with pain, the change in breast appearance and the subsequent psychological problems are the main reason why patients with male breast feminization require treatment, especially in adolescents. However, when adolescent male breast feminization is detected, it is reasonable to hold off for 1 year before considering surgery, as there is a possibility that the enlarged breast may degenerate spontaneously after the patient’s body has been endocrinally stabilized prior to surgery. If it has caused significant psychosocial problems, early surgery should be performed. Take a detailed medical history to exclude drug-induced feminization of the male breast development, complete laboratory tests including endocrine tests, and suspend oral anticoagulant drugs such as aspirin for more than one week. The management of male breast feminization is a difficult task for the surgeon, requiring a balance of various issues such as the location of the incision, exposure of the operative field, and postoperative scarring. When the surgical plan is well executed, satisfactory results are polite. Since gynecomastia carries more of an emotional and psychological impact, especially in adolescent patients, the effort to achieve a satisfactory result is well rewarded for both surgeon and patient.