PROBLEM TO BE SOLVED: To provide a resin composition for a biocompatible material which forms an unseparable and biocompatible film on the surface of a base material.SOLUTION: The resin composition for a biocompatible material contains a (meth)acryl-base polymer made by polymerizing a monomer containing a silicon atom shown by formula (I) (Rrepresents a hydrogen atom or a methyl group, Rrepresents an alkylene group whose carbon number is 1 to 6, R, Rand Rrepresent an alkyl group whose carbon number is 1 to 4 and the like, and X represents an oxygen atom or -NH- group in the formula) and a monomer containing a nitrogen atom such as N-(meth)acryloyloxyethyl-N, and N-dimethylammonium-α-N-methylcarboxybetaine.
