The invention discloses a municipal garbage treatment device, and relates to the field of municipal engineering. The municipal garbage treatment device comprises a box body, wherein a feeding port isformed in a side end of the box body, a motor is arranged at the upper end of the box body, an output shaft of the motor is connected with an eccentric rod, the other end of the eccentric rod is rotationally connected with a transmission shaft, the transmission shaft is rotationally connected with a support, the lower end of the support is fixedly connected with a gear ring, the gear ring is in meshed transmission with a rotating gear, the lower end of the rotating gear is fixedly connected with a rotating shaft, crushing blades are uniformly distributed on the rotating shaft, the rotating gear is in meshed transmission with a fixed gear, and the lower end of the fixed gear is fixedly connected with a stand column. According to the municipal garbage treatment device, under the transmissionof the eccentric rod, the transmission shaft, the support, the gear ring, the fixed gear and the rotating gear, the crushing blades can revolve and rotate to crush garbage, and the linkage type transmission mode is adopted, so that synchronous treatment of crushed compression is realized, and the device is simple to operate; and moreover, the combined type movement track of the rotating shaft isutilized, so that the garbage is fully crushed, and the defect that garbage cannot be crushed thoroughly by a garbage crushing device is overcome.