Gynecomastia is classified as physiological or pathological. Physiologic gynecomastia is most often seen in newborns, adolescents, and menopause and is mostly self-healing. The pathological one is called gynecomastia (gynecomastia). Gynecomastia is a disorder characterized by enlargement of the male breast, unilateral or bilateral lumps, sometimes accompanied by pain and swelling. Although this disease is not common clinically, it causes great psychological stress to patients and affects their normal life, so timely, accurate and effective diagnosis and treatment of this disease should not be taken lightly. How does gynecomastia occur? Gynecomastia occurs mainly due to an absolute or relative increase in the level of estrogen in the body, or due to an increased sensitivity of the breast tissue to it. Both males and females secrete both androgens and estrogens, but only the ratio is different to reflect the difference in gender. For example, 1) diseases of the adrenal cortex, the main secretion site of estrogen, can cause an abnormal increase in estrogen levels; 2) when the liver, the site of estrogen metabolism, is diseased and has decreased liver function, estrogen accumulates in the body and causes the disease; 3) the testes, the main organ of androgens, can reduce the secretion of androgens due to diseases (such as testicular tumors, congenital testicular hypoplasia, etc.), while estrogen levels increase. This disease can occur when the level of estrogen increases. Gynecomastia also occurs in adolescence. Feminization of the breasts without obvious hormonal abnormalities often occurs in adolescent boys and can sometimes persist beyond puberty. It is often associated with congenital testicular dysplasia and is traditionally described as one of the symptoms of Creutzfeldt-Jakob syndrome. Patients sometimes have feminine signs, such as a sharp voice, absence of a beard, absence of a laryngeal node, and wide hips, along with genital malformations such as pseudohermaphroditism, hypospadias, or cryptorchidism. Gynecomastia can also be seen in adults, such as testicular atrophy secondary to inflammation or trauma, testicular malignancy (estrogen-secreting tumors), and adrenal cortical tumors, but these causes are less common. Once men have abnormal breast development, they should immediately go to the hospital for consultation and treatment. Generally speaking, the following tests and laboratory tests are required: 1. Chromatin examination; 6. CT scan of the adrenal glands; 7. X-ray photography of the butterfly saddle; 8. Examination of endocrine gland tumors. If a man finds himself with breast enlargement, he should go to the hospital as soon as possible to confirm the diagnosis, if it is physiological, pharmacogenic, there is no need to be too nervous, it can subside on its own or after the withdrawal of drugs, if it is pathological, the cause should be carefully searched for and treated in a timely manner for the cause, male breast enlargement, at an early stage that is given active and effective treatment, can still be restored to normal, while a longer period of time, the breast tissue hyperplasia is more serious The reason for this is the irreversible changes that must be treated surgically. At present, Western medicine does not have a practical treatment for this disease, mainly using hormone counter therapy and surgical removal, but for the surgical removal of the easy to leave an ectopic scar, both affecting the aesthetic and easy to recur. The surgical treatment is not recommended, except for those who insist on surgery due to oversized breasts, obvious pain and distension, or even mental anxiety and ineffective drug therapy. In addition, gynecomastia, due to its complex etiology, has different treatments for different causes. Patients with primary gynecomastia in adolescence have a tendency to heal themselves, usually returning to normal within 6 months. Primary patients in adults and the elderly tend not to heal spontaneously and should be treated actively. Secondary gynecomastia, because it is often a complication of other diseases; therefore, treatment for the cause is an important measure. Chinese medicine does not have the side effects of many western drugs and hormonal drugs, and its efficacy is remarkable. At the same time, the onset of the disease has a certain relationship with emotions. Therefore, it is very important to regulate emotions, keep a happy mood, avoid irritation and worry, and pay attention to the combination of work and rest in the treatment. During the period of illness, it is necessary to have confidence in the treatment of the disease, adhere to the necessary physical exercise and functional exercise, pay attention to the local breast cleanliness and hygiene, prevent nipple and skin damage to prevent co-infection.