Pain on both sides of the belly, in fact, is the location of the two sides of the groin or thigh root, analyze the cause of the following possibilities: 1, if the two sides of the thigh root pain, suspected that there is a problem with the head of the femur, you need to do the relevant examination, if it is suffering from necrosis of the femoral head, it should be treated in a timely manner; 2, both sides of the inguinal lymph nodes are enlarged, but also cause painful symptoms; 3, in addition, if it is a woman, there may be gynecological diseases, such as appendicitis, pelvic inflammatory disease, and so on, need to be clear diagnosis and then the treatment of the symptoms.