Abstract: The present invention discloses a purifier, including a purifier body and a filter unit arranged in a purification chamber of the purifier body. A side wall of the purification chamber has an opening to which a cover is mounted. The filter unit is an integrated filter and disinfection body, which includes a filter body and a disinfection body which are detachable from each other. The filter unit is mounted inside the purification chamber and electrically connected to the purifier body to supply power to the disinfection body. According to the arrangement of the filter and disinfection body in the present invention, the disinfection body and the filter body are collectively designed into one integrated structure, so that the disinfection body and the filter body can be mounted inside or removed from the purifier body as a whole, which is convenient and fast.