Health preservation refers to a medical activity to support life, enhance physical fitness and prevent diseases through various methods, so as to achieve longevity. The so-called life is life, survival and growth; The so-called maintenance means maintenance, recuperation and nourishing. In a word, keeping in good health is to maintain life. Guided by the theory of traditional Chinese medicine, we should follow the changing law of the biochemical set of Yin-Yang and Five Elements to scientifically recuperate human health and vitality. Psychological health preservation refers to the method of nourishing the heart, regulating the mood and life, so as to achieve the purpose of maintaining the body, reducing diseases, improving health and prolonging life. Lanhai Kangcheng's original and mellow coffee is mainly composed of coffee powder, oats and mixed fruit powder, which is suitable for people with constipation or intestinal ecological disorder who want to lose weight. It has the functions of removing viscera toxins, promoting viscera metabolism and renewal, and maintaining viscera environment. Long-term administration can clean up garbage toxins and aging cells accumulated in blood, liver, kidney, heart, lung and intestine for a long time, clean up black spots and dark lines, expel toxins, care skin and nourish viscera functions. The main components of local rare coffee are Cordyceps sinensis, Ganoderma lucidum, non-dairy creamer, white sugar, instant coffee and Houttuynia cordata Thunb. Cassia seed powder, Poria cocos powder, black jujube powder and precious Chinese herbal medicines. Suitable for people with hypertension, hyperglycemia and hyperlipidemia; Qi and blood imbalance, long-term constipation, fatigue; Metabolic dysfunction leads to toxin residues in the body. It is a kind of "scavenger", which has the functions of improving "three highs", clearing blood and expelling toxin, enhancing immunity and promoting human metabolism. Cleaning blood toxins, maintaining blood vessels, maintaining blood vessel elasticity, delaying aging, preventing cardiovascular and cerebrovascular diseases, regulating the filtering function of kidney toxins, regulating blood PH value, regulating blood lipids and weakening blood diseases. Regular drinking can really achieve the purpose of health preservation.