Scraping the location of itching may be due to is belongs to the normal reaction after scraping Gua Sha, or due to mechanical stimulation, tissue damage, skin allergies and other reasons. 1. scraping gua sha position feel itchy may be due to scraping gua sha after local blood circulation accelerated, meridian dredging, the skin appeared stress response, began to detoxification and drainage, the body has certain benefits. 2. mechanical stimulation: gua sha therapy is the application of smooth edges of hard tools in the skin repeatedly scraped therapy, mechanical stimulation will stimulate the subcutaneous itchy nerves, may cause gua sha position itching. 3. tissue damage: gua sha is too strong, too long, etc. will lead to local subcutaneous tissue damage, secondary inflammatory reaction will further stimulate the itchy nerve induced local itching. 4 skin allergy: some patients on the scraping oil or scraping utensils material allergy, after contact with the skin that will induce immune response, release histamine cause local itching symptoms. Scraping operation need professional doctor operation, avoid self-operation. If the location of scraping itchy, you need to go to the hospital in a timely manner to clarify the cause, by the doctor according to the situation of individualized treatment program, so as not to delay the condition.