牛黄为牛科动物黄牛的胆囊或胆管的干燥结石。根据外形不同分为蛋黄、管黄、粒黄,三者共称天然牛黄。系我国珍贵药材之一,具有清心开窍、豁痰定惊,清热解毒之效。牛黄在临床上用途很广,为内服及配制丸散之必药。但由于其来源少且价格昂贵,市场上,药店里出售假牛黄现象时有发生。下面介绍几种鉴别方法以供鉴别使用。 Niuhuang is a dry stone of gallbladder or bile ducts of bovine cattle. According to the shape of the egg is divided into yellow, yellow tube, grain yellow, the three are collectively known as natural bezoar. It is one of the most precious herbs in China and it has the effect of clearing the heart and opening the mouth, setting aside a panic, and clearing away heat and detoxifying the body. Niuhuang is widely used in clinical practice and is a necessary medicine for oral administration and preparation of pills. However, because of its small source and high price, the phenomenon of selling fake bezoar in pharmacies has occurred from time to time. The following describes several authentication methods for identification and use.