Highly flexible and scalable polyaniline (PANI)/reduced graphene oxide (RGO) hybrid film was fabricated using solution-process. SEM, TEM, Raman, and XPS analyses show that the PANI/RGO film is successfully synthesized. Notably, electrical conductivity of the PANI/RGO film (906 S cm^-1) is larger than both PANI (580 S cm^-1) and RGO (46.5 S cm^-1) components. The PANI/RGO film also displays diverse advantages as a scalable and flexible electrode material (e.g., controllable size and great flexibility). During the electrochemical tests, the film exhibits high capacitance of 431 F g^-1 with enhanced cycling stability.