The mechanism of action of medicinal bath: The overall effect of medicinal bath refers to the use of drugs through the skin, orifices, acupuncture points and other parts of the direct absorption, into the meridians and blood channels, the transmission of the whole body and play its pharmacological effect. 1, the overall mechanism of action of the bath: the overall effect of the bath refers to the use of drugs through the skin, orifices, acupuncture points and other parts of the direct absorption, into the meridians and blood vessels, the distribution of the whole body and play its pharmacological effects. In recent years, people’s research on the mechanism of external treatment of traditional Chinese medicine baths has been intensifying, and it is believed that in addition to the direct entry of drugs into the blood circulation to exert their own pharmacological effects, there is also the role of adjusting the functions of various systems, tissues and organs and the immune function of the body. At present, some people study the absorption of Chinese medicine through the skin in the following ways: (1) the drug is absorbed through the mucous membrane of the skin, the transport of the stratum corneum (including intracellular diffusion and intercellular diffusion) and the deep epidermal transport, and the other stratum corneum is hydrated, so that the drug enters the blood circulation through one or more ways. (2) The local stimulation of the drug on the skin, through the stimulation of the drug bath can make the local blood vessels dilate, promote blood circulation, improve the nutrition of the surrounding tissues, so as to play a role in reducing swelling; in addition, the nerve reflex caused by the action of the drug on the local stimulates the body’s self-regulatory effect, prompting the formation of certain antibodies in the body, so as to improve the immune function of the body. In short, through the stimulation of the skin to achieve the purpose of adjusting the function of the internal organs, prevention and control of diseases and restoration of health. 2, the local action mechanism of the medicinal bath: the local action of the medicinal bath refers to the local therapeutic and health care effects of Chinese medicine on the lesion. Chinese medicine bath will act on the local tissue, can make the concentration of drugs in the local tissue significantly higher than other parts, so the local curative effect is obvious, and the effect is rapid. Recent pharmacological research shows that: Huanglian, Scutellaria, Phellodendron, Yinhua, Panax notoginseng, Daxingye and other Chinese medicines have antibacterial and antiviral chemical components, so they have good anti-infective effects on the local. Chinese herbs such as Serpentine, Bitter Ginseng, Bupleurum, Tuguenpi and Kaempferia have killing or inhibiting effects on skin fungi and are often used in the treatment of ringworm and gynecological mycosis vaginalis. Through the study of the effect of elimination of decay and muscle growth, it was found that such drugs also have these effects: (1) promote cell proliferation and differentiation and granulation tissue growth. (2) Promote macrophages to engulf bacteria, foreign bodies and necrotic tissue fragments to improve local resistance to infection; (3) Improve blood circulation to the wound surface and accelerate its metabolism, thus promoting healing. In addition, after some cosmetic drugs are applied to facial skin, they are generally absorbed locally through the skin to achieve the purpose of unblocking meridians, running qi and blood, removing impurities, cleansing the skin, moisturizing the skin, removing wrinkles and increasing whiteness, dispelling external evil and defending against external invasion. From the perspective of modern medicine, herbal facial baths can moisturize and nourish skin tissues, provide the necessary metabolic environment, and enable facial skin cells to obtain nutrients directly for cosmetic purposes.