Kidney stones can cause pain in the small abdomen. Kidney stones can fall downward into the ureter and then may get stuck in the ureter, causing a sudden increase in pressure in the ureter, resulting in spasm of the ureter and producing the clinical symptom of pain in the lower abdomen. The pain will radiate to the small abdomen and produce the clinical symptoms of small abdominal pain. It is recommended to go to the urology department of a second-class hospital or above for routine urine and urological ultrasound examination, and CT examination of kidney, ureter and bladder in time to make a clear diagnosis. If the CT examination determines that it is a kidney stone or ureteral stone, extracorporeal lithotripsy or minimally invasive surgery can be chosen for treatment. Antispasmodic and analgesic drugs can be used to relieve the symptoms of low back and abdominal pain and clinical symptoms of small abdominal pain, such as flurbiprofen ester, diazoxide, morphine, dulcolax and other drugs.