A medical monitoring device includes a signal collection module, a data processing module and a display module. The data processing module processes a vital sign signal collected by the signal collection module, generates physiological parameters, and generates visualization information about parameters of interest corresponding to a designated anesthetic phase based on request information, the designated anesthetic phase is an anesthetic induction phase, an anesthetic maintenance phase or a postoperative recovery phase, and the parameters of interest comprise parameters selected from the physiological parameters and/or anesthetic parameters derived from the physiological parameters. The display module at least displays the visualization information about the parameters of interest corresponding to the designated anesthetic phase in an anesthetic state display area.