A method for performing the translation type mapping in the No. 7 gateway signaling network includes defining translation type information on a non-local signaling network in a translation type mapping table according to a manager's request; mapping a translation type of the non-local signaling network contained in the SCCP message received by the neighboring (adjacent) non-local signaling network by searching the translation type mapping table; and mapping a translation type of a local signaling network contained in the SCCP message transmitted to the adjacent non-local signaling network into the translation type of the non-local signaling network by searching the translation type mapping table.