Patients with renal failure cannot eat foods with high sodium, high potassium and high phosphorus, we will analyze the following points: 1. 2, control the intake of potassium-containing food, because patients with renal failure have impaired blood potassium metabolism and hyperkalemia, we should limit the intake of potassium, such as not eating oranges, bananas, melons, oranges, etc.; 3, limit the intake of phosphorus, the blood phosphorus of patients with renal failure is generally elevated, and excessive phosphorus intake can cause parathyroid dysfunction. So due to limit the intake of phosphorus, food containing high phosphorus, such as animal offal, nuts, etc..