The principle of scraping to lose weight can reduce the size of fat cells and make fat active at the same time, but it needs to be adhered to. Scraping to lose weight is to scrape the meridian points with scraping instruments, and through benign stimulation, give full play to the function of nourishing and defending qi, make the meridian points congested, improve local microcirculation, and play the roles of eliminating evil, dredging collaterals, relaxing muscles and tendons, regulating qi, expelling wind and dispelling cold, clearing heat and removing dampness, promoting blood circulation and removing blood stasis, and relieving swelling and pain. In order to enhance the body's potential disease resistance and immune function, so as to achieve the purpose of strengthening the body's resistance to pathogens and preventing and treating diseases, scraping therapy has a long history. Scraping and wiping parts: Chinese medicine believes that the upper and lower neck bones and chest ribs on the back are arm and shoulder diseases. Scraping with copper coins dipped in sesame oil has meridian points and holographic points. Scrape the chapped head, forehead and legs with cotton yarn or hemp thread dipped in sesame oil. The scab in the soft meat of human abdomen is rubbed with salt hands. It can be seen that the parts of scraping to lose weight involve the head, forehead, neck, chest, abdomen, upper and lower limbs. Scraper: The tools used can be divided into hard scraper and soft scraper according to the thickness of skin and the thickness of intramuscular fat. Fingers can also be used as scrapers. Scrapers commonly used by the people are porcelain, such as porcelain spoon, porcelain bowl edge, porcelain plate edge and porcelain wine glass; Copper plate, copper coin, silver dollar, copper spoon and other metals. Lubricants include sesame oil and other vegetable oils, water, liquor, etc.