The invention discloses a hydrostatic-layer wave energy power generation device, which comprises a floating body reciprocating up and down along with waves, wherein a waterflow guiding and accelerating disc is connected to the lower side of the floating body; the waterflow guiding and accelerating disc comprises a disc body, the disc body comprises an outer ring body which is internally provided with a disc core body; a plurality of guide plates inclination directions of which are the same are annularly distributed between the outer ring body and the disc core body; a water channel is formed among the outer ring body, the disc core body and the two adjacent guide plates; an impeller which can be clamped on the waterflow guiding and accelerating disc and can rotate relative to the waterflow guiding and accelerating disc is arranged at a water outlet of the water channel; a plurality of blades are annularly distributed on the impeller; the blades are opposite to the water outlet of the water channel to ensure that water flows out from the water outlet to impact the blades to drive the impeller to rotate; the waterflow guiding and accelerating disc is provided with an accommodating space; and a power generator a rotor of which rotates under the driving of the impeller is arranged in the accommodating space.