The bones at the hip are called the pelvis and the sacrococcygeus, which includes the ilium, the pubic bone and the sit bones. Their role is mainly to form an encircling structure to provide effective protection for the pelvic organs, such as the uterus, adnexa, bladder and rectum in the pelvic cavity, which can play a good role in supporting and protecting the body in case of trauma. Another effect is to maintain the stability of the human body, through the sacroiliac joint and the hip joint to connect the human spine and lower limbs, so that the normal stability of the human body can be completed. Because this part of the body to maintain the stability of the body plays a very important effect, so the surrounding soft tissue is prone to lesions, such as strains, strain and cold caused by sterile inflammatory lesions, will produce the peripheral nerve irritation and pain and unfavorable activities. Therefore, it is important to protect the sacrococcygeal region and the entire hip tissue structure as much as possible to avoid the formation of chronic aseptic lesions that can affect the normal quality of life.