The invention discloses a sea wave energy storage and power generation device. The device comprises a base, a caisson, a gear disk set, a floating and thrusting set, a power gear unit, a cylinder set, a gas storage barrel, a pneumatic power set and a generator, wherein a power generating mechanism for converting floating force of sea water and thrust force of sea wave into power is mainly utilized; the caisson which is immersed in water is arranged below the base; a gear disk positioned on a track is arranged on the caisson; the bottom of the gear disk is correspondingly and fixedly provided with a thrusting plate and a floating cylinder; the thrusting plate is positioned by using a supporting rod and the gear disk, so that the floating force and the thrusting force of the sea wave are utilized to thrust the floating cylinder and the thrusting plate, the gear disk is thrust by the thrusting plate to actuate, and the gear unit is driven by the gear disk; thus the cylinder set is driven by the gear unit and the high-pressure gas in the cylinder set is introduced into the high-voltage gas storage barrel, so that the pneumatic power set is thrust by the high-pressure gas, the kinetic energy is transferred to the generator, and the produced power is transmitted by the generator; and the kinetic energy is converted into electric energy by gathering the thrusting force brought by the natural resources.