Post-operative diet of kidney cancer patients should pay attention to low-salt diet and consume light and easy-to-digest food. If there is edema and hypertension, they should eat less salt, limit the intake of protein food and drink less water. They can choose foods that can enhance the immunity of the body and help the body recover. For example, fish, and dates, sweet almonds, mushroom food. Avoid eating and should not crave salt. The diet should not be too narrow and should be based on high protein and high vitamin foods to make up for the excessive consumption of tumor and improve the body’s immunity. Eating different fruits appropriately and more fruits and vegetables containing vitamins are good for the recovery of the body.