Municipal road traffic marking device and marking method thereof

The invention relates to the technical field of traffic marking tools, in particular to a municipal road traffic marking device and a marking method thereof, and solves the problems that when traffic marking is marked, it cannot be guaranteed that the device always moves along one marking line by manually controlling the advancing direction, and the distance between the marking line and the edge of a road cannot be controlled at a curve. A municipal road traffic marking device comprises a movable seat plate, splicing plates are fixed to the two ends of the movable seat plate, a pigment storage barrel is placed on the upper surface of the movable seat plate, a plurality of universal wheels are installed at the bottom of the movable seat plate, and a material collecting plate is detachably installed in the middle of the bottom of the movable seat plate. The material gathering plate is U-shaped, and a trimming groove is formed in the bottom face of the middle bent position. The movable seat plate, the material g