The way to gain weight for men, first of all, a reasonable diet, should eat more nutritious, easy to digest food, appropriate to eat more beef, mutton, eat more protein-rich and high sugar content as well as meat food, drink more milk, soy milk, protein powder, etc.. Appropriate to eat high-calorie food, such as cheese, chocolate. You can also eat pig’s feet soup, pork ribs stewed with seaweed soup, etc. Eating such foods regularly can effectively increase the fat content of the body. Patients should quit smoking and drinking, do not stay up late, do not have too much mental stress, should ensure sufficient sleep, and pay attention to appropriate exercise, such as running, cycling, etc. For people with long-term spleen and stomach malfunction and are not fat, Chinese medicine should be used to regulate the spleen and stomach, whether it is a person with a deficient cold spleen and stomach or internal heat in the spleen and stomach, the balance of yin and yang is better with Chinese medicine, once the balance of yin and yang is improved, the weight will increase naturally through diet and exercise.