The cause of left mid-abdominal pain coupled with frequent urination may be urinary infection, chronic prostatitis, gynecological inflammation and other diseases. 1. urinary infection: bacterial urethritis, acute cystitis, acute pyelonephritis and other diseases can lead to left mid-abdominal pain, perineal discomfort, burning urethral symptoms, as well as urinary tract irritation such as urinary frequency, urinary urgency, urinary pain. 2. Chronic prostatitis: When chronic inflammation of the prostate occurs, the inflammatory substances will not only stimulate the mucous membrane of the vas deferens, leading to symptoms of vague pain and swelling in the lower abdomen. It can also irritate the neck of the bladder, leading to urinary disorders (such as frequent urination, urinary urgency, etc.). 3. Gynecological inflammation: such as adnexal cysts, pelvic inflammatory disease and other gynecological diseases, can make the abdomen by inflammation stimulation, resulting in abdominal symptoms of hidden pain, pain, pain location is usually the location of the female internal genitalia. At the same time, it can also lead to the emergence of frequent urination, urinary urgency and other symptoms. When the left mid-abdomen paroxysmal pain coupled with frequent urination, it is recommended to go to the hospital for consultation, to clarify the specific causes of the disease, to facilitate targeted treatment, so as not to delay the condition.