Second, urinary system stones: such as kidney stones, ureteral stones, can cause lumbar pain, while the reflection to the abdomen causes abdominal pain, the patient urinates when the pain symptoms increase, bed rest does not make the pain relief, after the ultrasound examination, can find the existence of stones. Through early diagnosis and early treatment, it is possible to relieve left-sided lumbar pain and abdominal pain and avoid serious adverse reactions. Patients should pay attention to the protection of the lumbar region, lumbar spine and urinary system to prevent the development of the above diseases.