To provide a water flow control device of a simple structure in which an operation can be easily conducted, and in which a water stopping effect is secured.
A water flow path parted by a partition plate is provided in a seat body 1, and a side containing chamber to which a side cover 12 is coupled is separately provided close to the seat body. The inside of the side containing chamber is parted to two spaces by one pressure-fit plate 3, one space of them receives a water flow introduced from a side through hole, and the other space is communicated and connected to a water inflow port 114 and a water outflow port 115 to let the water flow advance into the water flow path. A push rod of a multi-stage gear device receives force to push a push rod member at its end to move a push rod sleeve outward for forming a proper space for enabling move of the pressure-fit plate, when the pressure-fit plate is moved outward by fluid pressure at the water inflow port to generate a gap, so that a liquid flow goes from the water inflow port through the water discharge port to form a flowing state. By pushing the push rod again, action force for stopping water can be formed to the pressure contact plate by a slow operation.