Below the navel pain, the most common reasons are the following: First, gastrointestinal dysfunction, patients if the abdomen is cold or ate cold food can be caused by hidden pain below the navel, some patients will have diarrhea, and even fever, it is recommended that the patient to improve the routine blood tests, stool routine examination. Second, if the patient has pelvic inflammatory disease, mainly refers to women will appear below the navel pain, often accompanied by abdominal distension, some patients will have a fever, it is recommended that the patient to gynecology for specialist diagnosis and treatment. Third, if the patient has a urinary tract infection will appear below the navel pain, often accompanied by frequent urination, urinary urgency, urinary pain, it is recommended that the patient to improve the blood test, urine routine examination to assist in the diagnosis. So there are a lot of diseases that cause pain below the navel, must analyze the patient’s condition, it is recommended to go to the hospital for a detailed examination and clear reasons for further treatment.