To provide an antifouling coating film that exerts stable antifouling properties over a long period and that has the proper property of non-adhesion to a substrate.SOLUTION: An antifouling coating film incudes a silicone rubber (A) and silicone oil (B). The silicone oil (B) has a structure in which a silicone unit and a polyether unit alternately and linearly continue. The content of the silicone oil (B) falls within the range of 0.5-15 pts.mass with respect to 100 pts.mass of the silicone rubber (A).SELECTED DRAWING: None

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