The invention belongs to the technical field of road marking paint, and in particular discloses a rapidly dried coating which comprises the following components in parts by mass: 50-65 parts of C5 resin, 180-220 parts of coarse whiting powder, 180-220 parts of quartz sand, 2-4 parts of titanium dioxide, 2-3 parts of PE (Polyethylene) wax and 5-9 parts of a composite plasticizer, wherein the composite plasticizer comprises the following components (1) or (2) in parts by mass: (1): 2.5-3.0 parts of DMP (Dimethyl Phthalate) and 4.0-4.5 parts of polyether polyol 3000; (2): 0.9-1.3 parts of DOP (Di-Octyle Phthalate), 2.2-2.5 parts of DMP and 3-4 parts of polyether polyol 3000. The rapidly dried coating disclosed by the invention can be dried within about 5 minutes, and rapid drying can be achieved.