In today’s era of male sexuality, full and attractive pectoral muscles will enhance a man’s personal sex appeal index, attract the opposite sex and increase the male temperament! As a male, the chest was flat, if the chest appears not masculine pectoral muscles, but augmented breasts, we feel: with proud bosom, is a woman proud of the capital, but if this happens to men, but will bring endless troubles. The disease is not uncommon in clinical practice, and because it affects the physical appearance, patients may experience greater psychological stress and mental burden, often affecting social interactions, and most patients request treatment. The clinical manifestations are significant bilateral or unilateral breast development, hyperplasia and enlargement. There is usually a diffuse enlargement of the breast on palpation, with a relatively hard texture. Disc-shaped hard nodules may be palpated around the nipple, and flat round lumps appear in the areola area, most of which are painless, a few with slight discomfort or pressure. There may also be some degree of enlargement of the nipple areola. Clinical classification Type I: Glandular, enlarged breasts with predominantly enlarged mammary glands. Type II: Fatty type, the enlarged breasts are predominantly enlarged with fatty tissue. Type III: Glandular fatty type, where both glandular and fatty tissues are enlarged in the enlarged breast. Treatment Currently, cosmetic surgery for male breast development has become one of the more mature surgeries and has achieved very good results. 1, the previous surgical methods are mainly open excision and simple fat aspiration, or a combination of the two methods. Open excision has the disadvantages of greater surgical trauma and unsatisfactory postoperative breast shape. Fat aspiration alone is effective for fatty gynecomastia, but for glandular and glandular fatty gynecomastia, it has the disadvantage that the glands cannot be completely removed. The most commonly used method with good results is fat aspiration combined with glandular excision through small incisions in the areola. Liposuction can make the subcutaneous tissue of the breast evenly thinner, avoid local depressions after glandular excision, and promote skin retraction. After liposuction, the gland becomes clearly defined from the surrounding tissue, which is very convenient for excision. Postoperative drainage tubes need to be placed and pressure bandaged for 1-2 days to prevent postoperative hematoma and seroma. After removal of the drainage tube, compression is changed to wearing an elastic shapewear. The stitches are removed 8-10 days after surgery. Generally mild, moderate or even some severe development can be done without skin excision, and elastic shaping garments need to be worn for 1-3 months to promote skin contraction and flattening and prevent skin laxity. Excessive skin laxity requires a second stage of skin removal. Nipple areola reduction is also performed in the second stage if needed. Men, who need pectoral muscles; even perfect breasts, if they grow on a man, need to be cut. Of course, when choosing surgical excision, if you want a flat post-operative appearance, inconspicuous incisions and natural results, you are advised to go to a regular professional medical institution and leave it to a plastic surgeon.