The advantages of scrapping are: 1. Eliminating dampness: Scraping can stimulate meridians and acupoints, promote human metabolism, and is conducive to the discharge of moisture in the body. 2. Promote blood circulation: Scraping stimulates meridian points and promotes vasodilation, thus improving blood circulation. 3. Treatment of female dysmenorrhea: Scraping has the function of dredging meridians and blood stasis, thus relieving female dysmenorrhea. 4. Slimming and losing weight: Scraping can promote gastrointestinal motility, thereby enhancing the secretion of digestive juice in the gastrointestinal tract and promoting digestion. Scraping can also promote metabolism, which is conducive to the discharge of metabolic wastes and toxins and achieve the effect of slimming.