A resin composition comprises a modified polyimide compound, an epoxy resin, and a solvent. The modified polyimide compound has a chemical structural formula of the Ar′ represents a group selected from a group consisting of phenyl having a chemical structural formula of diphenyl ether having a chemical structural formula of biphenyl having a chemical structural formula hexafluoro-2,2-diphenylpropane having a chemical structural formula of benzophenone having a chemical structural formula of and diphenyl sulfone having a chemical structural formula of and any combination thereof, the epoxy resin and the modified polyimide compound are in a molar ratio of about 0.1:1 to about 1:1. A polyimide film and a method for manufacturing the polyimide film using the resin composition are also provided.