The invention relates to a dispatching mechanism, in particular to a municipal guardrail vehicle unloading dispatching mechanism. According to the municipal guardrail vehicle unloading dispatching mechanism, people can unload guardrails more conveniently to be prevented from being crashed and then injured, and the situation that the guardrails are abraded, and subsequent using is influenced can further be avoided. According to the technical implementation scheme, the municipal guardrail vehicle unloading dispatching mechanism comprises sliding rails, sliding blocks, a fixing rod, a movable plate, an idler wheel, a baffle, a supporting plate, a limiting plate and the like; and the sliding rails on the front and rear sides are provided with sliding blocks matched with the sliding rails correspondingly, the sliding blocks and the sliding rails are in sliding fit, and the fixing rod is fixedly connected to the upper part of the front side face of the sliding block on the front side. The guardrails are placed on a transverse plate and slide down to the supporting plate, the movable plate is in a horizontal state, and then the guardrails can fall onto the ground, people do not need to carry down the guardrails by hands, thus the time and labor are saved, abrasion caused by contact between the guardrails and a hopper can further be avoided, and through a driving mechanism, the movableplate can be put down or put away more conveniently by the operators.