Yang deficiency is the result of the body’s diminished function and is prone to signs of cold deficiency. It is manifested as fear of cold extremities, preference for heat, especially fear of cold, tolerance of summer but not winter, preference for warm food. The urine is clear and long, the pulse is sunken and weak, etc. The symptoms of Yang deficiency in men are mainly the following: 1. gastrointestinal manifestations: loss of appetite, light mouth, nausea, vomiting, loose stools, belching and swallowing acid, incomplete grain, abdominal pain and bloating, or thin stools, easy diarrhea after cold, warmth and pressure; 2. mental state manifestations: slack fatigue, weakness, depressed and timid character, depressed mood, irritable temper, anxiety, white face, or vapidity. . 3, reproductive system performance: low libido, sexual life is not harmonious, men do not lift, sperm less and low survival rate, lumbar pain and lumbago. 4, Yang deficiency performance: kidney Yang deficiency of blood circulation is hampered, cold hands and feet, hair loss, the pulse is sunken and weak, the body is drowsy, easy to drowsy, easily tired, difficult to focus on. The above is the symptomatic manifestation of Yang deficiency in men. When the above symptomatic manifestation occurs, the specific situation should be under the guidance of a clinician, and patients are advised to go to the hospital in time to avoid delays.