Traditional Chinese medicine has always had the habit of winter health, the theoretical basis of winter health is the cosmological concept of “Heaven and man correspond to each other”. According to Chinese medicine, human beings live in the natural world, and the physiological functions of the human body tend to change with the seasons, i.e., “heaven and man correspond to each other”. Plants and animals in nature, especially cereal plants, have different “spring growth, summer growth, autumn harvest, and winter storage”. As the most intelligent creature, human beings have a similar biological clock in their bodies during their billions of years of evolution, that is, “if you follow nature, you will be healthy, and if you follow nature, you will live a long life”. In winter, human beings are also in the period of “sealing”, at this time, taking tonic can make nutrients easy to absorb and store, on the one hand, can make the human body have strong resistance in winter, so as not to be attacked by the cold and become seriously ill; on the other hand, it can also store energy for the next spring and summer, to avoid next year due to the lack of yang, Yin cold within the ambush Therefore, it is one of the methods to maintain health. A winter tonic is preventive medicine The Four Seasons of the Great Treatise on the Tuning of the Gods says: “The sage does not treat the sick, treat the unwell, do not treat the chaos, treat the unrest, this is also called. If the disease has become and then the medicine, chaos has become and then the cure, like thirst and wear well, war and cast cone, is not also late.” So winter tonic is preventive medicine, that is, when the human body has not yet appeared disease, choose the most appropriate time to replenish the strength, strengthen the defense, enhance physical fitness, to ensure health. There are two methods of winter tonic, one is food tonic and the other is medicine tonic. It belongs to the category of “tonic” in Chinese medicine, which has the function of replenishing nutrients, regulating or improving physiological functions, enhancing physical fitness, and improving resistance to diseases, etc. It is mainly applied to various weaknesses. As the saying goes, “medicine is better than food”. Therefore, in winter recuperation, food supplementation has an important role. Winter temperature is low, through a comprehensive intake of various types of food, especially focus on the intake of winter food to nourish the yin and kidneys, benefit gas and blood, in order to replenish the body’s required heat and nutrition, enhance physical fitness, improve the ability to prevent cold and resist disease. Third, the best time to take winter tonic winter tonic, in time should be “winter solstice” before and after the most adaptable, because the winter solstice is the winter and March climate change boundary, after the winter solstice, Yin Qi began to recede, Yang Qi gradually rise, in the closed contain lively vitality, at this time to take tonic, easy to play the effectiveness, but also the elderly or physical deficiency of the body to nourish the body It is the best time for the elderly or the weak to nourish their bodies. According to the meteorological method of temperature division (five days for a wait), when the average temperature stabilizes below 10℃, it is the beginning of winter. 50 days after the winter solstice, it is the best time for winter tonic, and targeted dietary supplementation is very beneficial to enhance physical fitness and prevent diseases.