If you are too thin, you will easily feel weak, fatigue, panic, shortness of breath, dizziness, headache, poor appetite, which will bring inconvenience to your life, and this situation should be taken seriously. First of all, we should check for diseases, and if there is no disease, then we should adjust the diet structure and plan to gain weight. The cheeks are obviously sunken in due to emaciation, so we should pay attention to the following points in the diet: Develop a reasonable diet system Three meals a day with a reasonable distribution of nutrients, the distribution of calories should be one third of breakfast, Chinese food and dinner, such as 33% of breakfast, 34% of Chinese food and 33% of dinner, so that the calorie supply in the body is even. Develop good eating habits Eat three meals a day on time and have a small amount of snacks, but note that snacks should not be eaten within one hour before meals to avoid affecting appetite. If there are no special activities, you should not eat late night snacks in the evening, and if you can eat late night snacks in case of special activities, you should also pay attention to the desirability of eating soft and easily digestible food; you can choose some fruits, but you can only eat five minutes full to facilitate gastrointestinal digestion and absorption. Increase the intake of fat The amount of increase should be based on the standard that one’s gastrointestinal tract can digest and absorb normally, without causing indigestion symptoms such as diarrhea, and animal fat, cream, fatty meat, butter and animal skin can be used appropriately. Adjust the food structure Adjust the food structure according to the required heat, increase the number of staple foods, reduce the number of side dishes, eat more animal proteins, that is, the number of fish, meat and eggs should be increased accordingly, and you can choose more foods containing starch and high sugar content of staple foods. In addition, you can choose more food: hairy taro, potatoes, lotus root, cassava, bamboo potatoes, mountain potatoes, sweet potatoes, water chestnuts, rhizome, cicely mushrooms, fruit juice, jam, honey, a variety of fresh fruits, especially southern fruits, such as cinnamon, litchi, mango, pineapple honey, bananas, etc.