Beer is a kind of alcoholic beverage brewed with wheat malt and barley malt as the main raw material, and add hops, after liquid pasteurization and saccharification, and then after liquid fermentation. Beer has a low alcohol content and contains carbon dioxide, a variety of amino acids, vitamins, low molecular sugars, inorganic salts and various enzymes. Among them, low molecular sugar and amino acids are easily digested and absorbed.