Pressing pain in the left lower abdomen may be caused by stomach disease, colon disease, urinary system disease, reproductive system disease and other reasons. Patients should go to the hospital in time, according to the corresponding situation to take medication, surgical treatment and other ways to control the condition. 1. Gastric diseases: If the left lower abdomen is painful when pressed, it may be caused by gastritis, gastric ulcer or duodenal ulcer. The patient’s pain and diet are more related, need to confirm the diagnosis and follow the doctor’s instructions to take acid inhibitors such as omeprazole enteric-coated tablets and amoxicillin and other antibiotic treatment. 2. Colon disease: if the left lower abdomen pain, may be the ascending colon or descending colon inflammation, tumor. Need to cooperate with the doctor to do fecal occult blood test and colonoscopy and other aspects of the examination to confirm the diagnosis, after diagnosis, as soon as possible drug, surgical treatment. 3. Urological diseases: including urethritis, nephritis, cystitis, kidney stones, ureteral stones, etc., which will cause pain in the left lower abdomen, and may be accompanied by urinary frequency and urgency, urinary pain and other symptoms. It can be treated symptomatically by taking anti-infective drugs such as levofloxacin and erythromycin. In addition to the above factors, reproductive system and other aspects of the disease can also cause the phenomenon of left lower abdomen pressing pain. Patients should go to the hospital in time, determine the cause of the condition under the diagnosis of the doctor, and take appropriate treatment according to the different conditions for treatment.