Bladder stones are stones that form in the bladder and it can be categorized into primary bladder stones and secondary bladder stones. Urinary distress is one of the common symptoms of bladder stones, to prevent urinary distress must eliminate the lower urinary tract obstruction and infection, such as surgical treatment of prostate enlargement and urethral stenosis, eradication of urinary tract infections, especially those bacteria that break down urea, avoiding bladder foreign bodies, and reducing the occurrence of stones. Preventive measures: 1, usually should drink more water, and develop the habit of drinking water. Because drinking more water can increase the volume of urine, dilute the crystals in the urine, so that they can be easily discharged from the body. At the same time, even if the tiny stones have been formed, it can be flushed out of the urine early. Some scholars point out that it is best to drink more than 2,500 milliliters of water per day to maintain a light urine color. If the local water source is high in calcium, it should be softened before drinking. It is best to drink magnetic ratio water. 2.Don’t eat and drink a lot, limit the excessive nutrition. Because eating and drinking are mostly high protein, high sugar and high fat diet, which will increase the risk of stone formation. Usually should be appropriate to eat more roughage and vegetarian food. 3, if the stone patients, after the stone cure, for oxalate to stone patients, in order to prevent to stone recurrence, should avoid eating food containing high oxalic acid, such as spinach, beets, mushrooms, potatoes, corn, strong black tea, coffee, cocoa, chocolate, persimmons and prunes, etc.; if it is the urate patients, should pay attention to minimize the consumption of food high in uric acid, such as animal organs, seafood, coffee, cocoa, black tea, chocolate and peanuts, etc.. , chocolate and peanuts, etc.