The invention discloses a wastewater treatment device for water and soil pollution treatment. The device comprises a primary sedimentation tank and a secondary sedimentation tank; the secondary sedimentation tank is fixedly mounted on one side of the primary sedimentation tank; a plurality of sedimentation plates are mounted in the primary sedimentation tank and the secondary sedimentation tank; an aeration tank is fixedly mounted on one side, far away from the primary sedimentation tank, of the secondary sedimentation tank; an aeration assembly is mounted on the aeration tank; a filter tank is fixedly mounted on one side, far away from the secondary sedimentation tank, of the aeration tank; a sludge greening tank is fixedly mounted on one side, far away from the secondary sedimentation tank, of the primary sedimentation tank; a neutralizing tank is fixedly mounted on one side, far away from the aeration tank, of a filtering tank; a liquid inlet is formed in the primary sedimentation tank above the sludge greening tank, and a water outlet is formed in the lower end of one side of the neutralizing tank. Sedimentation, aeration, filtration and neutralization of wastewater are realized, the sludge dehydration cost is reduced, reutilization of wastewater products is realized, the energy-saving and environment-friendly properties are higher, the sedimentation effect is improved through the multi-stage sedimentation treatment, and self-cleaning of sedimentation plates is realized.