The invention provides a tool error prevention management system. The tool error prevention management system comprises a central tool library subsystem, a multi-table numerical control machining center, a tool selection client and a tool management database. The numerical control machining center of a to-be-used tool to be selected in the multi-table numerical control machining center to be defined as a target numerical control machining center, the tool selection client is used for selecting the tool to be used for a sub-tool library of the target numerical control machining center, the toolmanagement database is used for automatically arranging a tool holder position for each selected tool to be used and providing a query for the parameter information of the tool for the target numerical control machining center, the target numerical control machining center controls the sub-tool library to move according to the tool holder arrangement result of the tool to be used and guides an operator to correctly install the tool, and the target numerical control machining center automatically writes the parameter information of the to-be-used tool inquired from the tool management databaseinto the target numerical control machining center, so that the randomness of tool disassembly and assembly is reduced in the tool management process, errors in manual input of parameters are avoided, and the installation efficiency and accuracy are improved.