Hydropower generating device

The utility model discloses a hydropower generating device, and aims to solve the problems of large scale, high cost, and the like in the prior art. The hydropower generating device comprises a support, a water wheel and a power generator, wherein, the support comprises two parallel vertical frames arranged at intervals; a bearing seat and a bearing are arranged at the top of each vertical frame; a main shaft pass through two bearing inner rings; the water wheel comprises an inner wheel hub, an outer wheel hub arranged concentrically with the inner wheel hub, and a plurality of wheel spokes connecting the inner and the outer wheel hubs in the radial direction; a plurality of water buckets are arranged on the outer edges of the inner and the outer wheel hubs; the buckets are arranged in the radial direction of the inner and the outer wheel hubs; the water wheel is arranged between the two vertical frames; the main shaft is arranged in the inner wheel hub; and one end of the main shaft is outwards connected wit