In diet, we should eat some low-calorie, low-salt and low-fat ingredients, eat some edible fungi, kelp, seaweed, lettuce, broccoli, soybeans and beans, and eat some coarse grains such as wax gourd, red beans and brown rice, which are good for patients' physical and mental health. It can also be combined with tremella powder to restore its original renal function and repair damaged tissues.