Diagnosis: According to the typical manifestations of lumbar abdominal cramps, nausea, vomiting and hematuria, it is not difficult to diagnose the stone through ultrasound and routine urine examination. Note: X-rays may cause fetal malformation, abdominal radiographs, CT, imaging and other tests should be avoided, and it is not recommended to perform magnetic resonance examination in early pregnancy (especially the first three weeks). Treatment: Conservative treatment: 1. Indications: no obvious infection, mild fluid retention. 2. Methods: Drink plenty of water, antispasmodic, analgesic. When the pain is severe, small doses of morphine and dulcolax can be given. Note: avoid using: codeine, anti-inflammatory pain, ibuprofen, aspirin and other pain relief. Third, surgical treatment: 1, indications: failure of conservative treatment; complications of severe infection; severe obstruction leading to severe damage to renal function; acute renal failure. 2.Methods: local anesthesia under renal puncture fistula drainage, double J tube placement internal drainage. Ureteroscopic lithotripsy, the best choice of holmium laser. Percutaneous nephrolithotomy stone removal Open surgery. Note: 1. General anesthesia should be avoided in early pregnancy. 2. Extracorporeal shock wave lithotripsy is contraindicated in pregnancy combined with stones. 3, Surgical treatment is preferred, try to avoid percutaneous nephrolithotripsy, ureteroscopic lithotripsy and open surgery.