The utility model relates to a technical field is retrieved to the filter material, concretely relates to device that backwashing water filter material was retrieved, including the backward flow cellbody, the concave accumulator that is equipped with of backward flow cell body, the accumulator is equipped with the back flow that is used for filter material backward flow to filtering pond, the back flow is equipped with control flap. The utility model discloses the cost of manufacture is low, and the design is succinct, convenient operation, and the operation is stable, and when backwashing water flowed through accumulator upper portion, the filter material was because self action of gravity and being concentrated on in the accumulator. After the back flush, open the control flap of back flow, can make the filter material of recovery return reuse in the filtering pond, furthermore, the utility model discloses the device is applicable to retrieves multiple for water treatment filter material, sand in filter material such as water works's quartz sand, manganese sand, haydite, particle activated carbon, anthracite and the biological filter of disposing of sewage, bio -contact oxidation tank and biological fluidized bed, rubble, coke, anthracite, haydite, active carbon, plastic products etc..