The invention relates to an antibacterial western-style coat having an elbow protection function. Protective devices are arranged on the positions of sleeve elbows of the western-style coat, wherein each protective device comprises a wear-resistant layer, a bottom layer and a buffer layer; the wear-resistant layers and the bottom layers are fixedly connected, so that sealed accommodating cavities are formed; the buffer layers are arranged in the accommodating cavities and are fixedly connected to the bottom layers; each the buffer layer is of a strip-shaped structure and is bent into an irregular shape; and sterilizing substances are kept in gaps constituted by the buffer layers. The western-style coat disclosed by the invention has the advantages that elbow joints are protected from getting injured in the case that the elbow joints are born with excessive force or born with force for a long time, and protective parts are not easy to cause bacterium growth.