The invention discloses a mobile spraying-collecting car washer, comprising three parts of a spraying-collecting part, a control part and an accessory part; the spraying-collecting part comprises a water sprayer, a water-spraying washing scrubber, a water collector, a water-collecting wiper, an external adapter tube of running water, a clean water tank and a foam tank; the control part comprises an electronic control panel; and the accessory part comprises a waste water collector, an anti-contamination work fence, a chassis, a recycling bin and an illumination lamp bracket. When the car washeris used, a power supply is connected with a running water tap firstly, then a water outlet tube switch of the external adapter tube of running water is turned on by adopting the electronic control panel, the water flows into the water-spraying washing scrubber via a general exit and is sprayed out from a water-spraying hole arranged on the water-spraying washing scrubber, and the original water pressure is hardly lowered down; the water-spraying washing scrubber is provided with fluff and a water form regulating switch, therefore that washing the surface of an object is very flexible and safe, instead of adopting traditional high-pressure car washing every time; after the car is washed, the water drops on the car and the waste water on the ground are removed by the water collector and thewater-collecting wiper, thus improving the speed and safety for washing cars, and achieving stopping with washing at any time and zero-pollution discharge.