A medical operation system includes a controller for controlling a plurality of medical equipments, a communication unit for transmitting and receiving data between each of the plurality of medical equipments and the controller in two-way communications, an information recorder which records, together with time information, information regarding the plurality of medical equipments transmitted and received by the communication unit, a signal processor which extracts predetermined information from the information recorded on the information recorder and processes the predetermined information to generate time-series data, and a display output unit for visualizing the time-series data output from the signal processor and outputting the visualized time-series data to a display.