The effective components such as amino acids, ursolic acid, oleanolic acid and bioflavonoids in the formula of Xiasangju have the functions of killing influenza A virus H3N2 subtype, highly pathogenic avian influenza virus H5n/kloc-0 subtype and influenza B virus strain, and can be used for preventing and treating human influenza A, influenza B and avian influenza. After testing and research, the content of amino acids such as chlorogenic acid is 5-8 times that of other brands of Xiasangju, and has applied for patent protection. At the same time, it is the first in China to use fingerprint patent technology to evaluate the quality of Xiasangju, which can comprehensively improve people's resistance to influenza and avian influenza, and is known as "Duffy".