Abstract: An operation procedure management method and system effectively prevents degradation of the operation quality and the occurrence of accidents includes a plurality of client terminals, and a server system for providing information regarding operation procedures to each of a plurality of operators. A first processing unit stores and manages information regarding a diversion relation between the operation procedures in storage apparatuses and, upon a change of one of the operation procedures, searches for other operation procedures having the diversion relation with the changed operation procedure on the basis of the diversion-related information and transmitting changed contents as a change notification to the client terminal retained by the operator who conducts the operation procedure detected by the search; and a second processing unit which has received the change notification, displays a message according to the changed contents of the operation procedure on an output device at an appropriate timing.