Uremic patients can eat watermelon, apples and pears, while oranges, bananas, peaches and grapes are not eaten as much as possible. Once chronic renal failure enters the uremic phase, the kidneys have lost their detoxification and drainage capacity, and at this time for many foods need to be controlled, such as foods containing more salt, eating too much can easily cause edema and heart failure. The main reason for the restriction of fruit foods is to avoid hyperkalemia, which can easily affect the heartbeat and cause malignant arrhythmia leading to sudden death, which is a more common cause of death in uremic patients. Fruits such as oranges, bananas, peaches and grapes contain relatively high potassium and should not be eaten by patients with uremia. Watermelon, pears and apples contain relatively little potassium and can be eaten in moderation by uremic patients, but not too much. Because these fruits do not contain a lot of potassium, but contains more water, if you eat too much, equivalent to drinking too much water, easily cause edema aggravation and further increase in blood pressure, serious patients will also appear heart failure and cerebral edema. Therefore, for fruits and other foods, uremic patients can only eat a small amount.