The invention discloses an energy storage mechanism of a new energy electricity generating device. The energy storage mechanism comprises an energy storage box and a transporting part, wherein a plurality of fixed bars are symmetrically and fixedly connected to the lower end of the energy storage box, a base is fixedly connected to the inner bottom wall of the energy storage box, a support is fixedly connected to the upper surface of the base, a rotating rod is rotatably connected to the support, a pressure bar is rotatably connected to the rotating rod, one end of the pressure bar is rotatably connected to a movable rod, a first through hole is formed in the base, a second through hole is formed in the energy storage box, the lower end of the movable rod successively penetrates the firstthrough hole and the second through hole and is hinged to a floating box, and the other end of the pressure bar is fixedly connected to a knocking hammer. The energy storage mechanism disclosed by theinvention has the advantages that the energy storage mechanism is skillful in structure and convenient to use, can release energy at different times and at different locations according to differentdemands, is high in practicality, achieves all day continuous electricity generation conveniently, and solves the problem that electricity cannot be generated in existing full tide and withered reactive periods of time skillfully.