Scraping is based on the twelve meridians's theory and the principle of "treating symptoms and relieving emergency", which strongly stimulates meridians and makes local skin red and congested, so as to achieve the effects of waking up, detoxicating and eliminating pathogenic factors, clearing away heat and relieving exterior syndrome, promoting qi circulation and relieving pain, strengthening spleen and regulating stomach. The effects of scraping on skin can be divided into two categories, one is preventive health care and the other is treatment. Preventive and health care functions The preventive and health care functions of scraping therapy include health care prevention and disease prevention. The function of scraping therapy is the skin on the body surface. Skin is the most superficial part of the human body exposed to the outside world, which is in direct contact with the outside world and plays an adaptive and defensive role in the change of the external climate. The skin has these functions, mainly relying on the function of defending qi in the body. Stephy originates from the upper energizer and is driven by lung qi. It circulates in the skin at first, and Stephy is harmonious, so the skin is soft and dense (Soul Pivot is hidden in this place). Regular scraping by healthy people (for example, taking Beishu point and Zusanli point) can enhance the defense of qi. Strong defensive qi protects the exterior, and external evils are not easy to invade the exterior, so that the body can be healthy. If exogenous pathogens invade the exterior and interior, it will cause exterior and interior symptoms such as aversion to cold, fever, stuffy nose, runny nose, etc. Scraping in time (such as taking Shu Fei and Zhongfu) can eliminate exterior and interior pathogens in time and prevent them from being introduced into the five internal organs, which will lead to aggravation of the disease. Therapeutic effect The therapeutic effect of scraping therapy [2] can be shown in the following aspects: (1) Promoting blood circulation and removing blood stasis can regulate the contraction and relaxation of muscles, thus regulating the pressure between tissues and promoting the blood circulation around scraping tissues. Increase tissue flow, so as to play the role of "promoting blood circulation and removing blood stasis" and "removing blood stasis and promoting tissue regeneration" (2) Regulating the scraping of Yin Yang Can obviously regulates the balance of Yin and Yang in the function of viscera. For example, for patients with excessive peristalsis, abdominal and back scraping can inhibit excessive peristalsis and return to normal. On the other hand, people with decreased intestinal peristalsis can promote their peristalsis to return to normal. This shows that scraping can improve and adjust the function of viscera and balance the yin and yang of viscera. (3) The muscle attachment points of relaxing muscles and dredging collaterals and the injured soft tissues such as fascia, ligament and joint capsule can send out pain signals, and the related tissues are put on alert through the reflex action of nerves. Muscle contraction and tension until spasm is a reflection of this alert state, and its purpose is to reduce physical activity and thus relieve pain, which is a natural protective response of the human body. At this time, if the treatment is not timely or thorough, the injured tissue may form different degrees of adhesion, fibrosis or scarring, so that harmful impulses are constantly emitted, which will aggravate pain, tenderness and muscle contraction tension, and then cause secondary pain foci in surrounding tissues, forming metabolic disorders, and further aggravating the pathological changes of "pain without access". Clinical experience shows that whenever there is pain, muscles will be tense; Where there is muscle tension, there is bound to be pain. There is often a causal relationship between them. In the treatment of scraping, we can see that the pain focus is eliminated and the muscle tension is eliminated. If the tense muscles are relaxed, the symptoms of pain and oppression can also be obviously alleviated or disappeared, which is conducive to the repair of lesions. Scraping is an effective method to eliminate pain, muscle tension and spasm. The main mechanisms are as follows: first, strengthen local circulation and increase local tissue temperature; Secondly, under the direct stimulation of scraping plates in various methods, the pain threshold of local tissues is increased; Third, the relationship between nerves or spasmodic meridians and twelve skin parts: "If you want to know the skin parts, all meridians are natural." The division of the twelve-skin position is based on the distribution of the twelve meridians, that is, the twelve meridians has its own branch collaterals, which float on the body surface and have its own distribution area. Because there are twelve meridians, the skin area is also divided into twelve meridians, and the combination of six meridians of hand, foot and mouth is called six meridians skin area. The branch of meridian is collateral, and skin can also be said to be the division of collateral. Therefore, Su Wen's Spleen Theory also said: "Anyone who has the twelve meridians has skin." The relationship between skin meridians is of great significance to the diagnosis and treatment of diseases. Su Wen Pi Bu Lun: "The skin is the part of the pulse, and the evil guests in the skin will open, and the evil guests in the collaterals will open. When the collaterals are full, they will be injected into the meridians, and when the meridians are full, they will stay in the house. " It is pointed out that pathogenic factors from the outside to the inside, with scraping board as a tool and various manipulations, can stretch the muscles groaning through skin and contracture of fu organs, thus relieving their tension, spasm and pain. (4) Information Regulation Every organ of the human body has its own specific biological information (natural frequency and bioelectricity of each organ, etc.). ). When the organ is diseased, the relevant biological information will change, and the change of organ biological information can affect the functional balance of the whole system and even the whole body. Through various stimuli or various forms of energy transfer, it acts on specific parts of the body surface, producing certain biological information, and inputting it into relevant organs through the information transmission system to adjust abnormal biological information, thus playing a regulatory role in diseased organs. This is one of the foundations of scraping treatment and health care. Scraping, acupuncturing and inputting regulation information to stimulate Neiguan point can regulate coronary blood circulation, prolong left ventricular ejection time, enhance myocardial contractility and cardiac output of patients with angina pectoris, improve S-T segment and T wave of coronary heart disease electrocardiogram, and increase coronary blood flow and blood oxygen supply. Stimulating Zusanli point with scraping method, acupoint pressing method and pressing method, and inputting regulatory information, can have a benign regulatory effect on the functions of pituitary and adrenal medulla, improve immunity and regulate intestinal movement. (5) The scraping process of removing toxins (scraping the skin) can make local tissues highly congested, stimulate blood vessels and nerves, dilate blood vessels, increase blood flow and lymph, strengthen phagocytosis and handling power, accelerate the removal of wastes and toxins in the body, nourish tissues and cells, thus purifying blood, increasing systemic resistance, alleviating illness and promoting rehabilitation. (6) The conduction of qi and blood (through the meridian system) plays a nourishing and warming role in human body. Scraping acts on the muscle surface, making the meridians unobstructed and qi and blood accessible, then the blood stasis will be dispersed, the blood stasis will be disintegrated and eliminated, the whole body will be smooth, and the local pain will be alleviated or disappeared. Modern medicine believes that scraping can make local skin congested, capillaries dilated and blood circulation accelerated; In addition, the stimulation of scraping can regulate the relaxation and contraction function of blood vessels and the permeability of blood vessel walls through neuroendocrine, enhance local blood supply, and improve the process of scraping and abscess formation throughout the body. It is a phenomenon that blood vessels gradually expand until capillaries rupture, blood overflows, and blood stasis spots are formed locally on the skin. These blood clots (abscesses) will disintegrate quickly and produce autohemolysis. Autohemolysis is a kind of delayed benign weak stimulation process, which can not only stimulate and regulate immune function, but also act on cerebral cortex through cardiac nerve, and continue to regulate the excitement and inhibition of brain and the balance of endocrine system. Rash "rash" in traditional Chinese medicine is a name based on symptoms, which refers to a disease with obvious scars after scraping. One of its characteristics is that a series of scratches and countless tiny sand grains (bleeding spots) will appear on the skin soon after shaving, and it will last for a long time. Dysentery and bloating. The so-called abdominal distension means dizziness, chest tightness, abdominal pain and body aches. In the Ming and Qing Dynasties, there was a doctor named Guo Zhijia in China who studied consumption. He once wrote the book "Exudation and Jade Balance", which is a monograph on consumption.