Smaller urinary stones can be removed with medication, while most urinary stones can be crushed and excreted through minimally invasive treatment. If the diameter of stone is less than 0.6cm; the surface is smooth; there is no obstruction in the urinary tract below the stone; the stone does not cause complete obstruction in the urinary tract and stays in the local area for less than 2 weeks; the stone of special composition, for uric acid stone and cystine stone, internal treatment is recommended. 1. Drink more water: drink 2000-3000ml of water daily to increase urine volume to 2-2.5L/24 hours. Drink more water before bedtime and in the middle of the night to keep the urine in a dilute state at night, which is helpful to reduce the formation of crystals and eliminate small stones. 2. Change the dietary habits: including limiting salt, protein and oxalic acid intake. Daily sodium intake should be controlled within 3g; protein intake should be controlled at 0.8-1.0g/(kg.d). Foods such as spinach, black tea and chocolate are high in oxalic acid and should be minimized. Eat a low purine diet in case of hyperuricemia and hyperuricuria, avoid eating animal offal, fish and coffee, etc. 3, drug treatment: diclofenac sodium suppository anal plug, oral tamsulosin (alpha-blocker) 0.4 mg/d for 2 weeks, can promote ureteral stone discharge. Patients with uric acid stones can take allopurinol orally at a dose of 300 mg/d, which can be increased or decreased according to renal function and clinical needs. Oral sodium potassium hydrogen citrate at a dose of 3-5g orally 3 times/day to alkalize the urine to maintain urine pH between 6.8-7.2 and inhibit uric acid stone formation.