A medical intensive care system includes one or more signal sampling devices to detect at least one physiological parameter and parameter data corresponding thereto; memory to store the parameter data, and provide historical parameter data by storing the parameter data in a chronological order; a processor to process the historical parameter data to obtain a plurality types of data in an intensive care time interval; a display to display the plurality types of the data and current parameter data, comparatively, and update, when a historical intensive care time interval is adjusted, the plurality types of the data according to a change in the time interval.