Waterway board assembly and water purifier

The utility model relates to the technical field of water purification, and provides a waterway board assembly and a water purifier, the water purifier comprises the waterway board assembly, the waterway board assembly comprises a first waterway board body, a second waterway board body and a connecting structure, and a first waterway group is formed in the first waterway board body; a second water path group is formed in the second water path plate body, and the first water path group is communicated with the second water path group; the first waterway plate body is detachably connected to the second waterway plate body through the connecting structure. The first waterway plate body and the second waterway plate body are arranged, the first waterway plate body and the second waterway plate body are formed through injection molding, the first waterway plate body and the second waterway plate body are detachably connected through the connecting structure, maintenance, replacement and cleaning are convenient, and adjustment is flexible; and a professional supplier does not need to adopt professional welding equipment for welding machining, and compared with a hot welding assembly structure, the structure is simpler, assembly is convenient and fast, and the production cost is low.