Left lower abdominal cramps for two or three seconds may be caused by gastrointestinal tract dysfunction, left ureteral stones and other causes. 1. Gastrointestinal dysfunction: it is due to the malfunction of the stomach and intestines, stimulating the local spasm, which may produce left lower abdominal cramps for two or three seconds. After a clear diagnosis can be treated with drugs such as atropine and scopolamine under the guidance of the doctor. 2. Left ureteral stone: generally due to the left side of the kidney stone displacement, fell into the left side of the ureter, stay after the formation of the left ureteral stone, if the stone does not affect the flow of urine through, only hidden pain, can be through the ureteroscopy lithotripsy treatment. The above are only some of the common causes. Therefore, the left lower abdomen throbbing pain for two or three seconds of the patient, should go to the hospital as soon as possible to clarify the cause of the disease, after diagnosis and actively cooperate with the doctor for treatment. Usually, you should quit smoking and drinking, and you can eat some vitamin-rich vegetables and fruits.