The present invention provides a device for displaying respiratory conditions of a subject on a monitor having a first parameter acquisition unit (11) for acquiring a first respiration parameter representing a respiratory condition of the subject a second parameter acquisition unit (12) for acquiring a second respiration parameter representing a respiratory condition of the subject, said second respiration parameter differing from said first respiration parameter and a display controlling unit (13) for displaying, on the monitor, a chart representing a relationship between the first respiration parameter acquired by said first parameter acquisition unit and the second respiration parameter acquired by said second parameter acquisition unit wherein the chart represents the relationship between the first respiration parameter and the second respiration parameter in each respiration cycle, and a plurality of charts for preceding respiration cycles and charts for subsequent respiration cycles are displayed so as to adjoin one another successively in a prescribed direction.
