The utility model provides a washup sewage classifying filtration sedimentation treatment pond, include: cell body, inlet tube, thick slag bath, the hierarchical flashboard of thick sediment, thin slag bath, thin sediment hierarchical flashboard, sludge pond, sludge filtration flashboard, clean water basin, outlet pipe, sediment mud discharge pipe, end cap, swash bracket inclines. The cell body is settled in the swash bracket that inclines, and the cell body upside of the higher one end of swash bracket of inclining is settled has the inlet tube, and the cell body downside of the lower one end of swash bracket of inclining is settled there is the outlet pipe, and the hierarchical flashboard of thick sediment, the hierarchical flashboard of thin sediment and sludge filtration flashboard have been settled from inlet tube one end in proper order to the cell body to split into thick slag bath, thin slag bath, sludge pond and clean water basin with the cell body, the bottom in thick slag bath, thin slag bath and sludge pond is the V type and settles respectively has sediment mud discharge pipe, and sediment mud discharge pipe is sealed by the end cap. The utility model discloses simple structure through carrying out classifying filtration sedimentation treatment to washup sewage, makes the precipitate of washup sewage in the sedimentation treatment pond classify.