A method for processing an application program includes steps for a non-service system to obtain a first running instruction from a user for running a target first service system. Sending, by a terminal, a key acquiring request to a digital rights management (DRM) server using the non-service system, requesting key information corresponding to the target first service system. The key information is fed back by the DRM server when the user has use permission of the target first service system. Decrypting, by the terminal, the target first service system based on the key information using the non-service system, and executing a service function corresponding to the target first service system.