The syntactic analyzer(parser) in rule-based English-Korean machine translation (EKMT) system consists of English syntactic rules and the module performing the syntactic analysis by applying the rules. Lots of syntactic rules are constructed, and the rules must be continuously modified for improving the translation performance or accepting new domains, which requires much time and efforts. This paper proposes the syntactic rule management system which efficiently manages the syntactic rules and the associated analysis modules. During the task of the translation performance improvement, we frequently search, modify, remove and add the syntactic rules. So, the syntactic rule management system provides the functions such as searching rules using various keys, modifying, removing and adding rules. Also, the system automatically changes the parts of the parser associated with the changed syntactic rules. The proposed system makes the performance improvement more efficient by reducing human efforts for managing the syntactic rules and analysis modules, and expects to contribute to the continued improvement of the EKMT system.