The content of health preservation is very extensive, and China has been exploring and developing health preservation since ancient times. Health care generally includes daily life, diet conditioning, physical exercise, mental maintenance, overcoming bad habits and paying attention to life control in the four seasons. According to the theory and method of TCM health preservation, timely health preservation is very important. Timely means that the four seasons are suitable for cold and heat. This is an extremely important principle of TCM health preservation. Only when the human body adapts to the law of yin and yang changes in the four seasons can it develop and live a long and healthy life.