There is no specific diet for tumor patients, as long as they can maintain balanced nutrition and reasonable diet. Clinically, there are no strict rules and restrictions on the diet of tumor patients, as long as they insist on balanced nutrition and reasonable diet, they can eat more high-quality protein, vitamin-rich and carbohydrate-rich foods, such as chicken, fish, fresh vegetables and fruits, etc. There is no fixed dietary plan and method. In addition, most of the tumor patients will have reduced digestive ability, so they need to control the intake, take less food and eat more meals, so as not to aggravate the burden on the gastrointestinal tract, resulting in aggravation of uncomfortable symptoms, and there is no need to consume nutrients and health care products.