Buried sewage treatment device easy to disassemble, assemble and overhaul

The utility model relates to the technical field of sewage treatment, and discloses a buried sewage treatment device easy to disassemble, assemble and overhaul, which comprises a container, a mounting plate and a sewage treatment tank, wherein four groups of servo motors are fixedly connected to the inner wall of the bottom end of the container through bolts; the four sets of servo motors are arranged at the four corners of the inner wall of the bottom end of the container correspondingly. The four sets of servo motors are controlled to work synchronously, the sewage treatment tank on the upper surface of the mounting plate can be driven by the lead screw to move up and down in the container, and when the mounting plate moves upwards, the sewage treatment tank is moved out of the container through the through opening, so that workers can maintain the sewage treatment tank conveniently; and meanwhile, the mounting plate can pull the baffle to move downwards through the supporting rod, the through opening is fu