Foot bath is not suitable for people. There is a proverb called "to protect roots when raising trees, and to protect feet when raising people". As the temperature drops gradually, more and more people like to soak their feet with hot water before going to bed. Soaking feet with hot water can not only promote blood circulation of feet, reduce local muscle tension, but also help to eliminate fatigue and improve sleep. Traditional Chinese medicine believes that foot is the starting and ending point of foot three yin meridians and foot three yang meridians, which is closely related to all viscera and meridians of the whole body. Soaking feet with hot water can regulate the function of zang-fu organs and enhance physical fitness. In life, some people are used to soaking their feet in red, thinking that the higher the water temperature, the better the effect. In fact, the foot bath water should not be too hot, and about 40℃ is appropriate. This is because: on the one hand, the water temperature is too high, the blood vessels in both feet are prone to over-expansion, and the blood in the human body flows more to the lower limbs, which is easy to cause insufficient blood supply to important organs such as the heart, brain and kidney, especially for friends with cardiovascular and cerebrovascular diseases, which is tantamount to adding insult to injury; On the other hand, if the water temperature is too high, it is easy to destroy the sebum membrane on the skin surface of the foot, making the stratum corneum dry or even chapped. Children who are developing should pay special attention to the fact that if they soak their feet with overheated water, the plantar ligament will be deformed and relaxed due to heat, which is not conducive to the development of the arch of the foot, and it is easy to induce flat feet after a long time. Diabetic patients should also pay special attention to the level of water temperature, because such patients are prone to peripheral neuropathy, so that peripheral nerves can not perceive the external temperature normally. Even if the water temperature is high, they can't feel it, and they are easy to get burned. In addition to the water temperature, we should also pay attention to the following issues: First, the foot bath time should not be too long, 15 ~ 30 minutes is appropriate. In the process of soaking feet, due to the accelerated blood circulation, the heart rate is faster than usual. Too long, it is easy to increase the burden on the heart. In addition, because more blood will rush to the lower limbs, people with weak constitution are prone to dizziness due to insufficient blood supply to the brain, and even faint in severe cases. Among them, patients with cardiovascular and cerebrovascular diseases and the elderly should pay special attention. If you feel chest tightness and dizziness, you should temporarily stop soaking your feet and lie in bed immediately. Second, it is not advisable to soak your feet for half an hour after a meal. After a meal, most of the blood in the human body flows to the digestive tract. If you soak your feet with hot water immediately after a meal, the blood that should flow to the digestive system will flow to the lower limbs instead, which will affect digestion and absorption for a long time and lead to nutritional deficiency. Therefore, it is best to wash feet after eating 1 hour. Third, traditional Chinese medicine should not use metal pots such as copper pots to soak feet. Many patients suffering from heel pain, insomnia, dysmenorrhea and hypertension often use traditional Chinese medicine to soak their feet as an auxiliary treatment, instead of using metal pots such as copper pots, because the chemical components in these pots are unstable and easily react with tannic acid in traditional Chinese medicine to generate harmful substances such as iron tannic acid, which greatly reduces the curative effect of drugs. It is best to use wooden pots or enamel pots for soaking feet in traditional Chinese medicine. Tea tree foot bath in summer-sterilization, dampness removal, keeping feet clean and preventing beriberi Summer is the season when people care about sweaty feet and smelly feet. When I get home and take off my shoes, my feet will definitely feel relieved from the sweltering heat after a hard day's work. In order to clean sweaty feet, baking soda with deodorizing effect and tea tree essential oil with super bactericidal power will be used here. It is highly recommended to try this method in summer.