The invention relates to the technical field of water conservancy projects, and discloses a water conservancy project slope protection device. The water conservancy project slope protection device comprises a slope protection plate, planting grooves are formed in the slope protection plate, sapling supporting mechanisms are arranged in the planting grooves, stabilizing mechanisms are arranged at the lower end of the slope protection plate, the sapling supporting mechanisms comprise
elastic rods, rubber rings, water collecting tanks, special-shaped air bags, connecting pipelines,
extrusion air bags, spring rods, first deformation air bags, second deformation air bags, connecting rods,
metal sheets, vibration rods and vibration balls, the
elastic rods are located in the planting grooves, four
elastic rods are arranged in one planting groove, the four elastic rods are fixedly connected with the inner walls of the four sides of each planting groove respectively, the elastic rods are arranged in a bent mode, each
rubber ring is fixedly connected with one ends of the corresponding four elastic rods, and rubber nets are fixedly installed among the four elastic rods. The water conservancy project slope protection device enables supporting plates to be stressed by memory
metal rods to fasten soil, the water and
soil loss degree is reduced, and the water and
soil conservation effect is achieved.