Urinary stones during pregnancy is a common disease. The main reasons are: 1, the pregnant woman’s body uric acid and other substances increase during pregnancy, the concentration in the urine increases, easy to form stones; 2, the mechanical pressure of the fetus on the ureter and bladder, the peristaltic function of the ureter is weakened, prone to urinary tract infections and stones; 3, the pregnant woman’s dietary structure is unreasonable; 4, the pregnant woman combined with other diseases. For patients with small ureteral stones and less serious hydronephrosis, conservative treatment can be provided, drinking more water, at 1000ml-2000ml per day, appropriate activities, such as taking a walk can facilitate the self-discharge of stones. When the pain is obvious, bed rest should be provided, and intravenous supplemental water, vitamin B6, or progesterone can be injected into the muscle to relieve pain. Reduce the intake of animal offal, adopt low purine, low oxalate diet. If the ureteral stone is large and the obstruction causes obvious hydronephrosis, then it should be treated with active surgical intervention to reduce the damage to the kidney caused by urinary tract obstruction.