Tumor patients must eat well and take in enough various nutrients, which is one of the keys to recovery. However, some clinical symptoms appeared by tumor patients will affect their appetite. Together with various treatments received by patients and psychological pressure and other factors, their appetite is even worse, so what should be done? The loss of appetite of tumor patients is mainly related to the growth of malignant tumor, the release of toxins in the process of tumor destruction, the side effects of radiotherapy and psychological factors. In order to solve the problem, what should be done? What should patients do? 1. Eat less and more meals, provide high energy and high protein diet or nutritional supplements. To supplement the nutrition, make yourself work hard to eat. 2.May do moderate amount of exercise or eat appetizing food before meal. 3.You should keep a happy mood when eating. 4.Eat solid food first, then drink liquid soup or beverage during meals. 5.If you feel fatigued, rest for a moment and eat again after your strength is restored. Try to consume less greasy food, otherwise it may affect the appetite. 6.Take medicine to increase appetite as prescribed by the doctor, or supplement with appropriate amount of vitamins and minerals. 7, eat more fresh vegetables and fruits with high vitamin content: such foods can not only increase resistance, but also increase appetite. Some patients believe that raw and cold food should be avoided, but the fruit and vegetable category should be treated as appropriate. In the early postoperative period, vegetable juice and a small amount of easily digestible fruits can be eaten, and the amount should not be too much each time, and should be small and multiple meals. After the basic recovery of gastrointestinal function, you can eat some light and refreshing raw cold vegetables and fruits, especially during chemotherapy and radiotherapy, which have obvious appetizing effect. What should the patient’s family do? 1, do not always force the patient to eat, should let the patient pick their own food. 2.Avoid giving the patient food with strong taste and smell, because the smell of food can make nausea worse and appetite diminish. Try to use a variety of mild seasonings and often change the cooking style and form to increase appetite. 3.You can change the eating environment for the patient. 4. Remind patients that loss of appetite is only temporary and they should find ways to eat better and more in order to overcome cancer. Finally, the exchange of eating experience among patients can not only complement each other, but also help to increase appetite, which is also very necessary for cancer patients.