The thermoplastic profiled road marking paint is modified on the basis of the thermoplastic road marking paint, and the coating has excellent thixotropic properties in the molten state mainly by improving the fluid characteristics of the original coating. By shortening the dry-kneading time and increasing the compressive strength and softening point, special special construction tools are used to regularly draw various convex markings such as point shapes and strip shapes on the surface of the marking line.