A tool management system is equipped with: a tool management device that includes a tool searching unit; a tool database that includes a list of all of the tools that are set up in a factory; a list of tools to be used that is a list of tools that is necessary for the execution of an NC program; and a candidate tool list wherein candidate tools that can be tools to be used are extracted from the list of tools to be used and the tool database. The candidate tool list is displayed on a display unit of the tool management device.