Uremic patients can eat watermelon, but should be moderate. The dietary contraindications for uremia patients mainly include low salt, low fat, low purine, low sodium and low potassium. Watermelon in addition to containing more potassium, other conditions are consistent, so patients with uremia can eat watermelon in small amounts. However, due to the water content of watermelon is large, due to uremia patients will appear to reduce the amount of urine, if consuming too much watermelon will lead to too much water in the body can not be discharged, aggravate the burden of renal function of patients. In addition, watermelon contains a certain amount of potassium, due to uremia patients with decreased ability to discharge potassium, eating too much watermelon will lead to hyperkalemia, so it is recommended that patients should not eat too much watermelon. Uremic patients are advised to go to the hospital in time, follow the doctor’s instructions for standardized treatment, and consult a professional dietitian for dietary advice if necessary.