Small abdominal pain after holding urine may be some physiological phenomenon, may also be the manifestation of certain diseases symptoms, such as urinary tract infection, kidney stones, etc., should be timely consultation to identify the cause. 1. Physiological factors: the bladder is a muscular organ, full of urine when the bladder can grow, the muscles in the stretch, hold a long time after the muscle stretching, metabolism produces more acidic substances, resulting in pain in the bladder. 2. Pathologic factors: (1) urinary tract infection: such as cystitis, etc., due to the fact that the urine can not be discharged out of the body smoothly after holding it in, it is easy to lead to bacterial growth and reproduction, causing urinary tract infection. Generally manifested in the manifestation of frequent urination, urinary urgency, urinary pain, lower abdominal pain and other uncomfortable symptoms. (2) Prostatitis: when men have prostatitis, they may experience abdominal pain after holding back urine, and may also have frequent and urgent urination. In addition to the above factors, do not rule out is caused by other factors, but rely on this symptom is not enough to determine the disease. If the abdomen persistent pain should be timely consultation, please doctor to clarify the cause of the disease, timely treatment.