Fruit vinegar is a kind of sour condiment with rich nutrition and excellent flavor, which is made from fruits, including apples, hawthorn, grapes, persimmons, pears, apricots, oranges, kiwis, watermelons, etc. It has the nutritional and health-care functions of fruit and vinegar, and is a new type of drink with the functions of nutrition, health care and dietotherapy. Scientific research has found that fruit vinegar has many functions. Fruit vinegar can promote metabolism, adjust acid-base balance and eliminate fatigue. Fruit vinegar contains more than ten kinds of organic acids and many kinds of amino acids needed by human body. Different kinds of vinegar have different contents of organic acids. Organic acids such as acetic acid contribute to the normal circulation of tricarboxylic acid in human body, so that aerobic metabolism is smooth, which is conducive to removing deposited lactic acid and relieving fatigue. After a long period of labor and strenuous exercise, a lot of lactic acid will be produced in the human body, which makes people feel tired. If fruit vinegar is supplemented at this time, it can promote the recovery of metabolic function, thus eliminating fatigue. In addition, mineral elements such as potassium and zinc contained in fruit vinegar will generate alkaline substances after metabolism in the body, which can prevent blood acidification and achieve the purpose of regulating acid-base balance. Fruit vinegar can lower cholesterol. Generally, vinegar is an effective way to lower cholesterol, because vinegar is rich in nicotinic acid and vitamins, which are the nemesis of cholesterol, and can promote cholesterol to be excreted with feces through the intestine, thus reducing the cholesterol content in plasma and tissues. Studies have confirmed that patients with cardiovascular diseases take 20 ml of fruit vinegar every day, and after 6 months, cholesterol will decrease by 9.5% on average, neutral fat will decrease by 1 1.3%, and blood viscosity will also decrease. Fruit vinegar can improve human immunity and has anti-cancer and anticancer effects. Fruit vinegar is rich in vitamins, amino acids and oxygen, which can synthesize calcium acetate with calcium in the body and enhance the absorption of calcium. Fruit vinegar is also rich in vitamin C. Vitamin C is a powerful antioxidant, which can prevent cell canceration and cell aging, prevent the synthesis of nitrosamines, promote the decomposition of nitrosamines, reduce the content of nitrosamines in the body, protect the body from infringement, and prevent the occurrence of cancers such as gastric cancer and esophageal cancer. Fruit vinegar can promote blood circulation and reduce blood pressure. Fruit vinegar such as hawthorn contains triterpenoids and flavonoids which can promote cardiovascular dilatation, increase coronary blood flow and reduce blood pressure, and has preventive and therapeutic effects on diseases such as hypertension, hyperlipidemia, cerebral thrombosis and arteriosclerosis. Fruit vinegar has the functions of stimulating appetite, promoting digestion, relieving alcoholism and protecting liver. Acidic substances in fruit vinegar can dissolve nutrients in food and promote the absorption of nutrients such as calcium and phosphorus in food. Volatile organic acids and amino acids in fruit vinegar can stimulate the appetite center of the brain, promote the secretion of digestive juice and increase the concentration of gastric juice, thus promoting the production of body fluid to quench thirst, invigorating the stomach and promoting digestion and appetite. Clinical reports show that vinegar can improve the loss of appetite in patients with hepatitis. Drinking fruit vinegar before and after drinking can accelerate the decomposition and metabolism of alcohol in the body, so fruit vinegar has a great hangover effect. In Compendium of Materia Medica, it is said that vinegar has the function of "dispelling blood stasis and relieving jaundice", and it is also considered that vinegar can "stimulate appetite and nourish liver". People often use vinegar and brown sugar to treat liver disease. Fruit vinegar has antibacterial, anti-inflammatory and cold prevention effects. Acetic acid has a strong antibacterial effect and can kill many kinds of bacteria. Being jealous often can reduce diseases. In addition, vinegar is also effective in treating parotitis, tinea corporis, onychomycosis, biliary ascaris, poisonous insect bites, lumbago and leg pain. Fruit vinegar has the function of developing intelligence. Volatile substances and amino acids in fruit vinegar can stimulate the nerve center of the brain and develop intelligence. At the same time, fruit vinegar can prevent acidification of body fluids. Medical research has found that the acidity of human brain is related to IQ, and the IQ of children with alkaline brain is higher than that of children with acidic brain. Fruit vinegar has the functions of beauty, skin care and delaying aging. The increase of lipid peroxide is the main factor leading to skin cell aging. Regular consumption of fruit vinegar can inhibit and reduce the formation of lipid peroxide during human aging, reduce the level of lipid peroxide in the body and delay aging. In addition, organic acids, glycerol and aldehydes contained in fruit vinegar can balance the pH of skin, control oil secretion, dilate blood vessels, accelerate blood circulation of skin, and help to remove deposits and make skin smooth. Practice has proved that regular consumption of fruit vinegar can make the skin smooth and tender, reduce wrinkles and make the face moist and white. Fruit vinegar has the function of losing weight. Fruit vinegar is rich in amino acids, which can not only accelerate the metabolism of sugar and protein, but also promote the decomposition of fat in the body, so that excess fat in the body can be burned and prevent accumulation. Drinking fruit vinegar for a long time can reduce weight.