Massage acts on the body surface, dredging meridians, activating qi and blood, nourishing bones and muscles. Because qi and blood flow all over the body along meridians, it can affect internal organs and other parts. For example, pressing Pishu and Weishu, which are opened one and a half inches next to the 1 1 2 vertebra on the back, can strengthen the spleen and stomach, and pressing Hegu point can stop toothache. It can be seen that massage therapy is not only based on pain, but also on the principle of meridian connection.

Modern medicine believes that the physical stimulation of massage causes biophysical and biochemical changes in the action area, and local tissues produce physiological reactions. On the one hand, this reaction is strengthened by the regulation of nerve reflex and body fluid circulation, on the other hand, it causes the overall secondary reaction, thus producing a series of changes in pathophysiological processes and achieving therapeutic effects.

It has been observed that direct contact with skin can remove rotten epithelial cells, improve skin respiration, promote secretion of sweat glands and sebaceous glands, and enhance skin luster and elasticity.

Strong stimulation can cause protein decomposition of some cells to produce histamine and histamine-like substances, which, combined with the comprehensive effect of mechanical energy converted into heat energy, can promote capillary dilation, enhance the nutritional supply of local skin muscles, improve muscle atrophy and promote the repair of damaged tissues; Manual intermittent extrusion can accelerate blood circulation and lymphatic circulation.

Massage can also cause changes in blood composition and metabolism. The laboratory proved that after massage, the total number of white blood cells and phagocytosis increased, the proportion of lymphocytes increased, red blood cells increased slightly, and serum complement titer, oxygen demand, nitrogen excretion, urine volume and carbon dioxide excretion also increased.