The utility model provides a float style wave energy conversion device, the main solution utilizes the haulage rope directly to be connected with energy recovery device, easily causes the one -way deflection of energy recovery device, and the efficiency conversion is not high, the unable problem that obtains to stabilize energy output. It includes base, generator, hydraulic motor, energy recovery device and transducer, wherein, the base is equipped with the dead lever, and the dead lever includes ring gear portion and optical axis portion, energy recovery device is equipped with the complex gear with ring gear portion, and the gear axle head is equipped with haulage rope winding wheel, and the energy recovery device sleeve is in optical axis portion and can reciprocate, the transducer includes cylinder body, piston, end cover and haulage rope, and the haulage rope is connected between piston and haulage rope winding wheel, and the cover that provides between the end cover of energy recovery device lower extreme and the piston has coil spring's a guide post, the guide post wear out the end cover just with end cover clearance fit. It utilizes passes through haulage rope drive piston reciprocating motion with the matched with of ring gear portion gear, improves energy conversion efficiency, obtains steady energy output.