Disclosed is a method for producing a thermoplastic resin film, which comprises oxidizing the surface of a thermoplastic resin film (i) that contains an unsaturated carboxylic acid-modified polyolefin-based resin, then applying a surface modifier thereto, and stretching it. According to the method, thermoplastic resin films can be produced that have good adhesiveness between the film substrate and the coating layer thereof and have good printability and electrostatic resistance.