The invention discloses an improved garbage treatment device. The improved garbage treatment device comprises a control column and a machine frame which can move up and down and is arranged on the control column; a dovetail groove with an opening towards right is formed in a control arm, wherein the dovetail groove extends up and down, a fixed arm is arranged in the dovetail groove in an up and down moving mode, and the left end face of the fixed arm is fixedly connected with the machine frame; and the bottom end faces of the left side and the right side of the bottom end face of the machine frame are each equivalently provided with a sliding connecting groove extending upwards, a sliding connecting block is movably connected in each sliding connecting groove in a matching mode, a first assembling cavity is formed in the part, on the upper side of each sliding connecting groove, of the machine frame, and each first assembling cavity is internally connected with an inner tube barrel ina rotating fit mode. The device is simple in structure, convenient to operate and capable of realizing the adjustment work required by different construction, time and labor are saved, the purchasingcost is reduced, the working efficiency is improved, and the double construction requirements are met.