There is a folk proverb, "Soak your feet in spring, and the sun will rise and take off; Soaking feet in summer can clear away heat and damp; Soak your feet in autumn, moisten your lungs and intestines; Soak your feet in winter and your abdomen is warm. "In other words, foot bathing can be done anytime and anywhere, regardless of season and place. Foot bath, like acupuncture, massage and topical patch, is based on the principle of "treating internal diseases externally, promoting blood circulation and removing blood stasis". After all, the focus will still be "pulled out" by fresh blood. If you want to achieve a certain therapeutic effect, you can also add specific medicinal materials. The effective components in the medicine are directly absorbed by the skin and circulated to the whole body with qi and blood, thus achieving the effect of treating diseases and strengthening the body. Generally speaking, the amount of water should not exceed the calf. Therefore, it is best to choose a deeper bucket for soaking feet. Then the water temperature. The water temperature should not be too high or too low. Generally 40 degrees is better. In the process of soaking, hot water should be continuously added to avoid the water temperature dropping.