Cleaning vehicle unloading method and docking vehicle thereof

The invention discloses a cleaning vehicle unloading method and a docking vehicle thereof. The cleaning vehicle unloading method mainly comprises the steps that a communicating pipe of the docking vehicle is connected to a cleaning vehicle for sewage filtration and circulation treatment, and after the treatment, the communicating pipe is taken back; the docking vehicle lowers a hopper and garbageinside the cleaning vehicle is dumped into the hopper of the docking vehicle; the hopper is raised to the interior of a box body through a first lifting arm, and then a scraper blade scrapes the garbage off, so that the garbage completely falls into a garbage bin; when arriving at a garbage station, the box body is dumped by a tilting mechanism, so that the garbage is dumped from the box body to agarbage collection place of the garbage station. Since the capacity of the box body of the docking vehicle is large, one docking vehicle can be connected to a plurality of cleaning vehicles, and highefficiency of multiple doc