The present invention discloses a float and a catamaran type wave energy power generation device including the float. The float includes a float body, a regulating cabin arranged in the float body, the regulating cabin includes a water inlet and an air inlet, and the water inlet is connected to a
water pumping / pumping device. The catamaran type wave energy power generation device includes a float, a
hull hinged to the float through a first hinge
assembly, a permanent
magnet generator hinged to the float and the
hull, and a battery and a load controller installed on the
hull, the battery is respectively connected to the permanent
magnet generator and the load controller, and the rotor of the permanent
magnet generator is hinged to the hull through a second hinge
assembly. The wet area and center of gravity of the float of the present invention are adjustable. For the catamaran type wave energy power generation device including the float, the wet area of the float, the position of the center of gravity of the float, and the
resonance frequency can be adjusted according to different working locations and different wave conditions, and the device has the characteristics of high wave energy capture capability, strong maneuverability, strong adaptability to different sea areas and wave conditions, and strong self-power supply capability.