If you have not eaten for several days after chemotherapy, you can promote your appetite through dietary adjustments, moderate activity or nutritional supplementation through parenteral nutrition. Chemotherapy is a kind of palliative treatment for cancer, which can be used to kill cancer cells, but the people who have chemotherapy will have a lot of discomfort, and also have loss of appetite. Therefore, we can adjust the daily diet of people with reduced appetite by choosing appetizing food, such as hawthorn slices, stomach-enhancing and eliminating tablets, etc., to improve the desire to eat, and avoid spicy, stimulating and greasy food, choose light, easy-to-digest and highly nutritious food to consume. At the same time, you can moderate activities to promote gastrointestinal peristalsis, to avoid the discomfort caused by prolonged bed rest, at the same time, for the weak and unable to eat the crowd, you can through the parenteral nutrition for nutritional supplementation. Specific need to follow the doctor’s advice treatment.