A vibration damping material coater, wherein, when the wrist part (14) of a coating robot having a plurality of coating nozzles (15a, 15b) is operated in a specified operation pattern and viscous vibration damping material and binder with different properties are simultaneously injected from the plurality of coating nozzles, the vibration damping material is injected from the coating nozzle (15a) positioned at a front side as viewed in an operating direction (open arrow in Fig. 5) to coat a body panel (11) with the material as a lower layer material and, immediately after that injection, the viscous binders is injected from the coating nozzle (15b) positioned at a rear as viewed in the operating direction to overlappingly coat the upper surface of the lower layer material with the binder as an upper layer material.