According to the present invention, a method for controlling re-direction between heterogeneous mobile communication systems includes a step of receiving from a second communication system, to which a terminal whose connection request is rejected is attempting to connect, information indicating that the second communication system does not support the terminal, a step of setting information to prevent redirection to the second communication system, and a step of transmitting to the first communication system a connection request for the communication system. [Reference numerals] (475) Search a cell to re-contact; (485) Set IE values in pre-redirection information to direct the impossibility of a support of rejected E-UTRAN