Traditional Chinese medicine believes that physical diseases are mostly caused by low spleen and stomach function and insufficient qi and blood. Spleen is the foundation of the day after tomorrow and the source of qi and blood biochemistry. The spleen and stomach are healthy and full of qi and blood, so the muscles are full and the limbs are strong. On the contrary, the body is thin and the limbs are weak. To eradicate thinness, we must first rule out many chronic diseases such as hyperthyroidism, liver disease, kidney disease and tumor. Then the treatment with traditional Chinese medicine will have a good effect. Protein should eat more foods rich in fat and carbohydrates (starch, sugar, etc.) when it has sufficient intake. In this way, excess energy can be converted into fat and stored under the skin, making the thin body strong. Thin people with weak gastrointestinal function can choose the liver of chickens, ducks, fish and sheep to eat. In addition, fish is easy to digest and absorb. ■ Diet diversification If you want to gain weight, you must first gain weight scientifically and gain weight for health. Besides a balanced diet, you should also keep enough and good sleep. If people get enough sleep, their appetite is better, which is also beneficial to the digestion and absorption of food. And proper exercise.