The invention discloses a high-efficiency sand-adding sedimentation pool. The high-efficiency sand-adding sedimentation pool comprises a coagulating pool, a curing pool and a sedimentation pool, wherein partitioning plates are respectively arranged for partitioning between the coagulating pool and the curing pool and between the curing pool and the sedimentation pool; a first stirring machine is arranged in the coagulating pool, and a third stirring machine is arranged in the curing pool. The high-efficiency sand-adding sedimentation pool is characterized in that a flocculating pool is arranged between the coagulating pool and the curing pool; a partitioning plate is arranged between the flocculating pool and the coagulating pool; the flocculating pool is connected with a micro-sand collection system and a sludge returning system. Compared with the prior art, the high-efficiency sand-adding sedimentation pool disclosed by the invention has the characteristics that the impact-load resistance is strong, and the removal rate of suspended matters is high; a heavier part in the sludge is separated and utilized by adopting a hydrocyclone, the use of a reagent can be reduced, and the sedimentation efficiency is improved; an upward-flow inclined plate based on a shallow-pool theory is added in a sedimentation area, so that the occupied area of the sedimentation area is greatly reduced,the ascending velocity is high, the surface load is high, the sedimentation effect is good and the like, and the sedimentation efficiency of the sedimentation pool is improved.