The most common causes of pain below the navel in female patients are the following two: 1, urinary tract infection, manifested as hidden pain or cramping below the navel, accompanied by frequent urination, urinary urgency, painful urination, and in severe cases, patients may develop fever, it is recommended to improve routine urine tests, routine blood tests to assist in the diagnosis. 2, uterine and adnexal diseases, such as patients with uterine adnexal inflammation or uterine adnexal tumors, these diseases can cause navel pain below. Patients are advised to visit the gynecology department promptly and improve gynecological ultrasound and other examinations to assist in the diagnosis. In addition, if the patient has appendicitis or enteritis, it may also cause pain below the navel. Therefore, in summary, there are many diseases that cause pain below the belly button, and it is recommended that patients go to the hospital for timely consultation and systematic examination to clarify the cause and treat accordingly.