The invention discloses an ecological environmental protection vessel motive power device protection system, which consists of a plurality of single motive power devices, wherein each single motive power device comprises a propeller hub, a steel plate propeller blade, reinforcing ribs, a first transverse spoke, a second transverse spoke, a third transverse spoke, a fourth transverse spoke, a first fixed spoke, a second fixed spoke and a canvas propeller blade, the third transverse spoke, the first fixed spoke, the fourth transverse spoke and the second fixed spoke are sequentially connected for forming a back moving framework, the canvas propeller blade is fixedly arranged on the back moving framework and is hinged to the steel plate propeller blade in a pressing mode for forming a complete propeller blade, the first transverse spoke and the second transverse spoke are parallelly and fixedly arranged on the steel plate propeller blade, the propeller hub is fixedly connected with the steel plate propeller blade, and the reinforcing ribs sequentially penetrate through the propeller hub, the steel plate propeller blade and the canvas propeller blade and are fixedly connected with the impeller hub, the first transverse spoke, the second transverse spoke, the third transverse spoke and the fourth transverse spoke. The ecological environmental protection vessel motive power device protection system belongs to an ecological environmental protection vessel motive power device with the advantages that no harm is caused to water bodies, the passing aquatic organisms are not influenced during the operation, meanwhile, the avoidance of aquatic plants and other rubbish in water can be realized.