Calf scraping is suitable for the real heat or damp heat caused by acute “gua sha”, or due to qi blockage, meridian stagnation caused by pain, soreness and distension type of disease. The correct way to scrape the calf for the first in the calf coated with Gua Sha oil, with a Gua Sha board from top to bottom for scraping, after the end of the skin clean up. ⒈ first in the calf coated with the right amount of gua sha oil. Peck scraping: hold the scraping board and the skin between the angle of about 45 °, with the scraping board from the ankle from the bottom up, from the inside to the outside of the order in order to scrape, the force should be uniform, from light to heavy, in order to be able to withstand the degree. Generally scrape in one direction, no need to scrape back and forth. Generally scrape until the skin appears flushed, purplish red and other color changes, or the appearance of corn grain, papule-like spots, or flaky, striated plaques and other morphological changes, and accompanied by local hot feeling or slight pain. Some people are not easy to produce gua sha or gua sha less, can not be forced to produce gua sha. Need to pay attention to, each part of the general scraping 20 ~ 30 times, a scraping 10 ~ 20 minutes, the same part of the scraping every 1 week or more scraping 1 time is better, or to the skin on the gua sha recede, hand pressure skin without pain is appropriate. Scraping Gua Sha can improve local blood circulation, dredge meridians, adjust the local function, calf scraping Gua Sha after 30 minutes do not take a bath. The old and weak, children, more sensitive to the pain of the person with caution to use gua sha method. If the skin is broken after scraping Gua Sha, severe burning pain and other conditions should be timely medical care. Scraping is a therapeutic operation, need to operate under the guidance of a professional doctor, do not arbitrarily operate on your own to avoid adverse effects.