Abstract: The present invention aims at providing a coating system which is capable of uniformly applying coating materials mixed with aggregates with a low fluidity as well as homogeneity on a base material and at remarkably enhancing productivity in the coating process. The coating system according to the present invention is characterized by the provision of a hopper to contain the coating materials mixed with aggregate arranged at a position so as to place a material outlet port of the hopper above a base material conveyer and of at least one levelling roller which is rotated in the same direction as the advancing direction of the base material, and arranged at a position above said base material conveyer but ahead of said material outlet port in the advancing path of the base material. The levelling roller rotates at a higher peripheral speed than the speed of the base material conveyor.