Disclosed is a macro implementing method and apparatus that can perform a series of operations desired by a user through an interface between an ME (Mobile Equipment) and a SIM (Subscriber Identity Module) that support a SAT (Sim Application Toolkit). A combination of commands is provided so that a series of operations desired by the user can be performed in the ME using the SAT. The ME can provide a user-defined SAT service for automatically performing a series of operations desired by the user by combining and storing SAT commands so that a series of operations desired by the user can be performed. Thereafter a SIM application in the SIM can be successively performed using stored SAT commands. The terminal user directly constructs a single macro by tying several commands using the SAT, and thus operations that require repeated operations or complicated execution processes can successively be performed using a single execution input.