Abdominal pain and hematuria are recommended to go to the hospital for further examination to clarify the possible causes: 1, urinary stones, such as kidney stones, ureteral stones, stones cause high pressure in the renal pelvis, hydronephrosis, or spasm of the ureter, which can produce obvious symptoms of lumbar pain and abdominal pain, and at the same time, stones lead to local mucous membrane ulceration, mucous membrane hemorrhage can be manifested as hematuria. 2.Urinary system tumors, such as renal tumor, ureteral tumor, etc., the tumor itself can cause bleeding by ulceration, and the tumor can invade the mucous membrane of the urinary tract and cause mucous membrane destruction and bleeding. At the same time, the tumor can cause chronic pain or acute pain symptoms, especially the volume of huge tumors can cause the symptoms of lumbar and abdominal pain, and need to go to the hospital for ultrasound CT examination of the urinary system to make it clear. 3, upper urinary tract infection, common in pyelonephritis or renal abscess, ureteral infection, etc., which can cause chronic lumbar and abdominal pain and hematuria, and can even be accompanied with pus urine, elevated body temperature and other changes. Changes.