Improving effiency type water flushing device

The utility model relates to an improving efficiency type water flushing device for a water tank for a toilet. The improving efficiency type water flushing device of the utility model is mainly composed of a plurality of groups of water inlet devices and a floating ball structure, wherein, guiding water enters the trunk pipe of the water tank and is connected with a horizontal water diversion pipe connected with a plurality of water stop valves. Water can be supplied in a partial flow mode. The water inlet pipes of a plurality of groups of water inlet devices directly supply water for the water tank. A plurality of groups of water inlet pipes guide water to the upper edge of the water tank which is close to the toilet through a connection pipe. A plurality of water stop valves are respectively connected with floating ball rods whose number is corresponding to the number of the water stop valves. The on-off of the water stop valves can be controlled. The water pressure of the water which is stored in the water tank can be increased.