Commission in the middle point scraping can be based on the direction of the bladder meridian walk, tonic method to comply with the meridian qi, diarrhea method against the meridian qi. The point is located in the lower limbs, is the bladder meridian point. When scraping at this point, you can decide to scrape the direction according to the condition. 1. solid evidence: the patient pain refuses to press, you can use the laxative method, scraping from the calf to the thigh, the scope of the commission in the upper and lower. 2. deficiency: patients like warm like press, can be used to complement the method, from the thigh scrape to the calf, range for the commission in the upper and lower. The Commission in the point in the bend of the leg, popliteal transverse line of the midpoint. Gua Sha is the use of instruments made of different materials to scrape on the surface of the skin, in order to achieve the purpose of dredging the meridians and channels, activating blood circulation and removing blood stasis (to promote the operation of the blood and eliminate blood stasis in the body). Scraping gua sha commission, can be used to treat back and leg pain, abdominal pain, vomiting and diarrhea. Scraping gua sha committee, to the degree of gua sha. It is worth noting that: unknown mass, infection, bone injury, contusion, mole tumor, skin ulcer should not scrape. Scraping need to go to the hospital by a professional physician operation.