Frequent urination and stomach pain in women may be caused by other diseases such as urethritis, cystitis, pyelonephritis, and overactive bladder syndrome. 1. Urethritis: Urethritis is mainly caused by pathogen infection, such as gonococcus, Chlamydia trachomatis, Mycoplasma genitalium and so on. Patients can have frequent urination, urethral tingling, abnormal urethral secretions, lower abdominal pain and other symptoms, manifested as frequent urination stomach pain in women. 2. Cystitis: Cystitis may be caused by bacterial infection, drugs, sex hormone changes, low immunity, obstruction of urine flow and other factors. Patients may mainly manifest frequent urination, urgency, lower abdominal pain, burning sensation in the urethra, etc. Patients may suffer from frequent urination and stomach pain. 3. Pyelonephritis: Women with frequent urination and stomach pain are also considered to be caused by pyelonephritis, the cause of which is related to urethral obstruction, urethral mucosal injury, pathogen infection and other factors. Patients may have abdominal pain, generalized pain, headache, frequent urination, urinary urgency and other symptoms. 4. Other: female urinary frequency stomach pain is also considered to be caused by overactive bladder syndrome, pelvic inflammatory disease, uterine fibroids and other diseases. There are many reasons that cause frequent urination and stomach pain in women, and it is recommended that patients go to regular hospitals and undergo relevant examinations to find out the causes of the disease.