A burst of stabbing pain in the left lower abdomen, there may be intestinal obstruction, ureteral stones, cystitis, bladder stones, tumors and other conditions, if it is a female group, but also to consider pelvic inflammatory disease, adnexitis and other gynecological lesions. 1. Intestinal obstruction: the cause is complex, and intestinal inflammation, improper eating, abdominal cold, strenuous exercise, intestinal tumors and other lesions related. After the onset of intestinal blockage, feces can not pass through the intestinal tract, which will stimulate the patient to experience paroxysmal stabbing pain in the left lower abdomen. 2. Left ureteral stone: it can stimulate the patient to produce tugging pain and paroxysmal stabbing pain in the left lower abdomen. 3. Cystitis, bladder stones: as a common bladder lesion, stimulated by the lesion, the patient may experience paroxysmal stabbing pain in the left lower abdomen, mostly accompanied by bladder irritation, frequent urination, urinary urgency, hematuria and other symptoms. 4. Tumor lesions: if the patient has sigmoid colon cancer, bladder cancer, left ovarian cancer, left kidney cancer, left ureter cancer and other tumor lesions, paroxysmal pain in the left lower abdomen may also occur. 5. Gynecological lesions: adnexitis, pelvic inflammatory disease, left ectopic pregnancy, etc. are common, and when patients are in the acute stage of the lesions, paroxysmal pain in the left lower abdomen may occur. Left lower abdominal pain, should promptly go to the hospital, improve the examination, clear diagnosis and then be treated accordingly.