The dietary considerations after renal pelvis cancer surgery are as follows: 1. Try to reduce the intake of fat and cholesterol in the near future after surgery, do not eat fatty meat, fried food, animal offal, etc., especially do not eat food containing too much animal fat at one time. If needed for taste, use some olive oil to cook food appropriately; 2, increase protein-rich food to meet the body’s metabolic needs, such as lean meat, aquatic products, soy products, etc.; 3, eat more food rich in dietary fiber and vitamins, such as fresh fruits and vegetables; 4, develop the habit of eating regularly, and to do a small number of meals; 5, the food content can be low-fat semi-fluid diet or After a period of adaptation, gradually release the intake of fatty foods and resume normal diet, it is advisable to maintain a dietary structure of low fat, low cholesterol and high protein; 7. Avoid eating brain, liver, kidney, fish and fried food, and avoid fatty meat and alcohol to avoid affecting liver function or causing bile duct stones; 8. It is recommended to have more vitamin intake, especially pay attention to the supplement of fat-soluble vitamin A, vitamin D, vitamin E and vitamin K. Avoid stimulating or gas-producing foods, such as radish and onion, prohibit smoking and alcohol, and pay attention to drinking more water.