A water gate rail hinge and latch includes a hinge unit, a hinge portion, a wooden rail unit, a connective unit and a moveable latch. The hinge unit includes a first portion and a second portion. The first portion is connected with a fixed wooden rail and the second portion is connected with a moveable wooden rail. The first portion and second portion are connected by the hinge portion, which includes several clockwise rotational pieces and several counterclockwise rotational pieces. The wooden rail unit includes the fixed wooden rail and the moveable wooden rail. With such design, the fixed wooden rail and the moveable wooden rail may be opened and closed.