The pain on the inner side of the thigh near the belly is mainly caused by two kinds of diseases: 1) joint muscle strain caused by strenuous activities of the hip joint, usually after 2-3 days of rest, the symptoms can be relieved or disappear. 2) hip pain caused by femoral head lesion, usually after 2-3 days of rest, the symptoms can be relieved or disappear. Or because of femoral head lesions caused by hip pain and discomfort, usually need to further film examination or CT examination, the symptoms are serious and even need to carry out hip replacement, or femoral head replacement surgery, to be able to get cured. 2, because the belly near the inner thigh in the inguinal region, there are a lot of inguinal ligaments, prone to abdominal and femoral hernias, the most need to be alert to is the femoral hernia. Because of the femoral hernia its surrounding ligaments are more dense, femoral hernia hernia ring hole is relatively small, easy to intestinal incarceration. The prolonged incarceration can lead to ischemic necrosis of the intestinal tube, and may even cause acute diffuse peritonitis and infectious shock, which requires further abdominal ultrasound or CT examination to make a clear diagnosis. After the diagnosis is clear, emergency surgery is needed.