The left side of the small abdominal bending pain, generally the most common may be the lumbar spine is not lesion site caused by, including lumbar disc herniation, lumbar muscle strain, etc., may appear pain like small abdominal radiating pain characteristics. In addition, not except due to abdominal intestinal diseases, such as the left side of the colorectal lesions are easily caused by active abdominal pain is sometimes accompanied by nausea, vomiting and other symptoms. In addition, urinary stones, especially ureteral stones on the left side of the clinic may also be found to aggravate the pain when moving. For this situation should attract great attention, when the left side of the abdomen pain is more obvious and activities have a close relationship, must go to the regular hospital for a detailed examination, through the search for the cause of the disease and for the cause of the system of symptomatic treatment.