The utility model discloses an environment -friendly municipal administration drainage device, hold the body including debris, debris hold body upper end and are equipped with two doors that open thecabin, debris hold body middle part and are equipped with the baffle, debris hold the sinistron side and are equipped with first water inlet, debris hold body right side and are equipped with the second water inlet, first water inlet downside is equipped with the superstrong cloth of weaving, the superstrong cloth downside of weaving is equipped with the bearing plate, debris hold body below and are connected with main drainage pipe, four drain pipes have respectively been seted up on main drainage pipe left side and right side, superstrongly weave debris and the silt that cloth and bearing plate can effectual filtration fall the aquatic, the efficiency of dirty treatment of water is improved, the design of drain pipe is propped up and the drainage speed can be accelerated, blade rotary device can be abundant stirring sewage, accelerate its decomposition speed, the active carbon can further be purified waste water, the design of drain pump and air compressor machine can make the drainage speed further accelerate, the efficiency of the drainage is greatly improved, the process of drainage has been accelerated.