The invention relates to washing foaming equipment, in particular to car-washing foaming equipment. According to the car-washing foaming equipment, the manual labor amount can be reduced, and the foaming efficiency is improved. According to the technical scheme, the car-washing foaming equipment comprises sloping benches, a parking plate, a bottom plate, supporting plates, first sliding rails, first sliding blocks, first bearing seats, a lead screw, a nut, fixing frames and the like. The parking plate is connected between the sloping benches; a water collection tank is formed at the top of theparking plate, and drainage holes are evenly formed in the bottom of the parking plate at intervals and communicate with the water collection tank; and the left side and the right side of the top ofthe bottom plate are both connected with supporting plates correspondingly. An arc-shaped water pipe of the car-washing foaming equipment rotates, and thus spray heads can evenly spray water sources onto a car; a forward and reverse rotating motor enables a third gear to rotate, in this way, the lead screw does not need to be rotated manually; and the water sources after car washing can be collected by a water collection hopper and drained through an external drain pipe, and in this way, the water sources after car washing can be conveniently treated through manual work.