The invention provides an ocean wave energy collection device, which comprises a generator, a fan-shaped gear, a fixed seat and two ratchet driving devices, wherein the fan-shaped gear is provided with an inner rack and an outer rack which are coaxially arranged, and is also fixedly provided with a swing link; the swing link is also provided with a paddle-shaped pontoon; each ratchet driving device comprises an inner engaging ratchet mechanism, a driven gear and a connecting shaft; the inner engaging ratchet mechanism comprises a ratchet and a pawl; an outer gear is arranged on the outer circumference of the ratchet; the connecting shaft is fixedly arranged on the driven gear; the ratchet is sleeved on the connecting shaft; the pawl is hinged with the end part of the connecting shaft; the driven gear is in transmission connection with a rotating shaft of the generator; the outer gear of the ratchet in a ratchet transmission device is engaged with the outer rack; the outer gear of the ratchet in the other ratchet transmission device is engaged with the inner rack; and the fan-shaped gear is hinged with the fixed seat. The size of the ocean wave energy collection device is reduced, and the electric energy conversion efficiency of the ocean wave energy collection device is increased to fully utilize ocean energy.