The invention relates to an ecological cultivation system for a sand leaching slope water filtering pond. The system comprises a pond body, a sand leaching slope filtering structure, a water circulation pipeline, a ladder, an artificial road and an ecological ditch, wherein the pond body is provided with a pond bottom face and a pond slope face located on the peripheral side of the pond bottom face, the ladder is led from the pond bottom face to the top end of the pond slope face, the artificial road is located at the upper end of the pond edge slope face, the ecological canal is located on the outer side of the artificial road, and submerged plants and shellfish are arranged at the bottom of the canal; the sand leaching slope filtering structure is arranged at the upper portion of the partial pond slope face; the bottom of the pond body is communicated with the ecological canal through the water circulation pipeline; a controllable water level overflowing structure is arranged at the position, corresponding to the sand leaching filtering structure, of the canal wall of the ecological canal, and the water outlet end of the controllable water level overflowing structure is located above the sand leaching slope filtering structure. The system is suitable for high-density high-yield intensive culture of various feeding fish, culture of high-quality fish with the high oxygen consumption rate, cooperative culture of high-quality carnivorous fish, and culture of various special aquatic livestock, increases the yield of aquatic products, and improves the quality of aquatic products.