Waterway board and water purifier

The utility model discloses a waterway board and a water purifier, the waterway board is used for installing a driving piece, a valve seat for installing the driving piece is formed on the waterway board, and the valve seat is provided with a water inlet flow channel and a water outlet flow channel; and the driving piece is matched with the valve seat to form an on-off valve which can be used for communicating a fluid path between the water inlet flow channel and the water outlet flow channel or cutting off the fluid path between the water inlet flow channel and the water outlet flow channel. According to the waterway plate, the driving part is matched with the valve seat to form an on-off valve, so that water flow paths are all located in the waterway plate, water flow does not need to flow through the driving part, the driving part only needs to play a role of communicating or cutting off the water inlet runner and the water outlet runner, the structure and the machining process of the driving part are simp