After extracorporeal shock wave lithotripsy, you need to drink a lot of water and maintain the nutritional balance of your diet. 1. Drinking a lot of water: drinking a lot of water can increase the volume of urine, dilute the concentration of stone-forming substances in the urine, reduce deposition, and promote the discharge of stones. It is recommended that the 24-hour urine volume of adults be more than 2,000 ml, which is important for the prevention of stone formation. 2. Maintain nutritional balance: maintain nutritional dietary balance, avoid excessive intake of a certain nutrient. At the same time, according to the composition of the stones, metabolic state, etc. to adjust the composition of the diet. Recommended low-calcium diet for patients with hypercalciuria, oxalate stone patients to limit the intake of spinach, strong tea, etc., high uric acid patients to limit the high purine foods such as animal offal, and increase the intake of fruits, vegetables and coarse grains. There are many factors that contribute to the formation of stones, and stones have a high incidence and recurrence rate, so it is important to take appropriate preventive measures against stones.