Through investigation on the international development trend of earthquake disaster reduction system (EDRS) researches, a well finished Daqing Oilfield EDRS is introduced. Based on the PC System, redevelop-ment of the EDRS skeleton is well discussed, including the technical skeleton, function composition, structures of software and hardware, redevelopment languages, database, and remote linking and calling of analysis mod-ules. Meanwhile, it is pointed out that extending and utilizing the function of remote sensing information on the basis of the current distributed EDRS skeleton will become another study direction of EDRS.