There is no special contraindication for kidney cancer patients to eat fruits, but they should try to eat less fruits with high potassium content. Tumor patients generally have high body consumption and are prone to malnutrition. Kidney cancer patients should ensure sufficient and balanced nutrition in their diet. Fruits are beneficial to health and can be consumed by kidney cancer patients in moderation. However, some fruits such as bananas are rich in potassium, which may cause or aggravate hyperkalemia in kidney cancer patients, so it is recommended to eat less or avoid them. Besides, fruits with allergic reaction should be avoided. Besides fruits, patients should also consume staple food, fresh vegetables, meat, eggs and milk, pay attention to rest in life and avoid laborious infection. Patients with kidney cancer are suggested to go to regular hospitals for consultation in time and give targeted treatment or therapy under doctors’ guidance.