The principle of foot bath therapy in traditional Chinese medicine holds that the human body is a unified whole, and the viscera, organs, limbs and bones of the human body are interdependent, restricted and interrelated, and the pathological changes of one tissue may affect other parts. The foot is an important part of the human body, so systemic diseases will affect the foot. Similarly, foot disease will also affect the whole body and cause corresponding diseases. Soaking feet with hot water has the functions of promoting qi circulation, activating blood circulation, warming viscera, and dredging meridians, thus regulating the functions of viscera, promoting blood circulation of the whole body, improving the patency of capillaries, improving the nutritional status of the whole body tissues, strengthening the metabolism of the body, and making people feel relaxed and happy, which is of great benefit to health. The folk proverb says: "When you wash your feet in spring, the sun will rise and take off;" Wash feet in summer, remove dampness and clear heat; Wash feet in autumn, moisten lungs and intestines; Wash your feet in winter and warm your spoon in the abdomen. "Chinese medicine theory holds that the whole body of the human body is linked by meridians, and the sole of the foot is the concentration point of each meridian, also called reflex zone. The plantar reflex zone is connected with every nerve of the human body, connecting the five internal organs.
Traditional Chinese medicine foot bath is based on the principle of external treatment of internal diseases. The effective components of Chinese herbal medicine are dissolved in water by boiling, and then the drugs reach the internal organs through the meridians through the contact between water and feet, as well as the pressure and solubility of water, thus playing a role in treating diseases and strengthening the body. Especially for patients with coronary heart disease, dysmenorrhea, Raynaud's disease, arteriosclerosis obliterans and other qi stagnation and blood stasis and microcirculation disorders, it has obvious curative effect. According to different diseases, after 20 minutes of foot bath treatment, most patients have been improved, the blood flow speed has been significantly accelerated, and the phenomenon of blood cell aggregation and blood stasis has been alleviated. However, after soaking feet for 20 minutes, healthy people can also see the performance of enhanced microcirculation function such as accelerated blood flow and increased satiety. The improvement of microcirculation is conducive to the absorption of drugs. This fully proves that foot bath health care has a solid scientific foundation.