In recent years, the incidence of gynecomastia (GYN) has been increasing year by year, and its exact pathogenesis is still unclear, with a physiological prevalence and a majority of patients with elevated serological estrogen levels. Therefore, some scholars consider that its pathogenesis is related to the overexpression of local estrogen levels in the male breast. Gynecomastia feminizes the male chest profile, especially in the summer when men wear less clothes, and makes them feel inferior and uneasy about their feminine chest profile, thus affecting social communication. Male breast enlargement can be divided into the following three types: 1, mainly fatty tissue hyperplasia, soft breast texture. 2. Those with predominantly mammary gland hyperplasia have a firmer texture. 3. Both breast glands and fatty tissue are present. In gynecomastia, treatment is mainly through surgical methods. The traditional surgical method is to remove fat and breast tissue, which can make the breast get a flatter and firmer shape, and the extreme hypertrophy patients need to remove too much skin, but the post-operative scar growth on the breast seriously affects the aesthetics and quality of life, and many patients have a fear of this. Currently, we use liposuction + minimally invasive glandular excision technique, which is less invasive and can achieve better treatment results. Only a 3mm micro-hole is made in the chest for aspiration and shaping, and a hidden areolar incision is made to remove the enlarged glandular tissue and reshape the male breast contour.