Patients with renal cell carcinoma should pay attention to six points in postoperative diet: 1. Microscopically, people with hematuria and those who get angry easily should drink more water and eat more foods such as apples, sugar, black sesame seeds and fungus. 2. Patients with renal cell carcinoma should avoid spicy food, frying, crabs, garlic, raw onions, coriander, dog meat, wine, beef and mutton, coffee, etc.