The left side of the abdomen pain want to stool is a common clinical symptom, mainly considered to be the intestinal tract abnormalities, common causes of acute gastroenteritis, diverticulosis, irritable bowel syndrome, intestinal tumors or polyps, pelvic inflammatory disease, etc., need to clarify the cause of symptomatic treatment. 1, acute gastroenteritis: intestinal inflammation will lead to the patient left side of the abdomen pain want to stool, but defecation difficulties. In order to relieve inflammation, should be light diet, avoid spicy stimulating, cold food, reduce the stimulation of the gastric mucosa, if the consideration of infectious enteritis, if necessary, oral norfloxacin anti-infective treatment in accordance with medical advice; 2, intestinal ulcer: intestinal ulcer patients will appear the left lower abdomen, that is, the left side of the abdomen vague pain want to stool symptoms, and can be accompanied by unshaped stool, blood and other symptoms. Should go to the hospital to further clarify the diagnosis and give the appropriate treatment, such as ulcerative colitis, should be given mesalazine oral or take local treatment to relieve; 3, diverticulosis: the intestinal wall of the intestine protrudes outward, forming a gap, if inflammatory edema occurs, the symptoms of pain in the left upper abdomen wanting to stool can occur. Combined infection can be treated with antibiotics, in more serious cases, fasting, insertion of nasogastric tube and intravenous injection of supplementary fluids, daily bowel movements should be kept normal to avoid constipation, repeated episodes of internal therapy is ineffective, can cooperate with doctors for surgical treatment, removal of lesions colon segment; 4, irritable bowel syndrome: patients are affected by emotions and food leading to side abdominal pain, diarrhea want to stool. It is recommended to go to the hospital for further examination to exclude organic disease factors, consider oral antidiarrheal drugs, as well as drugs to promote digestion and probiotic conditioning; 5, intestinal tumors or polyps: some patients are due to rectal or colon tumors, polyps, in addition to the symptoms of pain on the left side of the abdomen want to defecate, some patients are also accompanied by blood in the stool, the performance of unshaped stool. Patients with this condition need to be alert and seek medical attention in time. Patients with early diagnosis should promptly choose surgical treatment, usually radical resection, either open surgery or laparoscopic surgery. Tumor patients should also choose adjuvant intravenous chemotherapy to prevent recurrence and metastasis according to their condition after surgery; 6, pelvic inflammatory disease: when the body’s immune function is reduced, invaded by pathogenic factors, resulting in pelvic inflammatory disease, there may be pain in the left side of the abdomen, accompanied by the desire to defecate, it is recommended to go to the hospital for further examination, no other organic disease can be treated with oral antibiotics or local cleaning treatment, in serious cases The lesion can be surgically removed and the pus drained.