Provided are an operation system and method for managing files based on events. The operation system is different from the mode that an existing operation system manages files based on a folder, the events and the files in the system are in a master-slave relation. When the files are created, the events which the files belong to are firstly selected, that is, the files are stored in the events which the files belong to respectively so that when a user interaction interface of the system receives a user query event request, the files belonging to the events can be displayed on the first page of the interaction interface in sequence according to the creating time or the activity intensity degree or the urgent processing requirements of the events in an icon button mode. The system stores the current version of each event, and can restore the originally-stored corresponding version of each event. The defects that at present, resources are distributed in a scattered mode and management is difficult are overcome, the mode of managing and operating organizational resources and the files based on the events is provided, meanwhile, the control content of event execution progress can be provided, and a user is urged to reasonably plan time and to complete the affairs of the user efficiently.