The invention discloses a three-roll solvent-free silicone coating machine, which is characterized by comprising a frame, an adjusting roll, a silicone oil bucket, an anilox roll, a rubber roll and a smooth roll, wherein the anilox roll, the rubber roll and the smooth roll are arranged in parallel; except for the vicinity of a contacting position when the rubber roll contacts with the smooth roll, the other parts of the rubber roll are surrounded by a cover body; and the anilox roll and the silicone oil bucket are surrounded by the cover body. The rubber roll, the anilox roll and the siliconeoil bucket of the coating machine are surrounded by the cover body, and a coating head adopts a closed structure, so that the volatilization of gasoline in the gasoline and silicone oil of coating material is reduced, the former proportion and the latter proportion of the components of the gasoline and the silicone oil in the coating material are consistent, the former performance and the latter performance of the coating material are consistent to be favorable for uniform coating, the volatilization is reduced, consumptive materials are saved, and materials with different qualities can be processed.