An air-conditioning ventilation system comprising: at least one ventilation device configured to circulate air among a plurality of rooms; at least one air-conditioning apparatus provided in at least one of the plurality of rooms; a human detector provided in each of the plurality of rooms and configured to detect at least one of a height and a body temperature identifying an individual entity of a human present in a corresponding one of the rooms in which the human detector is provided; an individual behavior pattern learning unit configured to receive information obtained through detection by the human detector as individual behavior pattern information identifying the individual entity of the human present in each of the plurality of rooms, and store the individual behavior pattern information for each of the plurality of rooms; an input unit configured to receive input of air-conditioning preference information including at least a setting temperature for each of the plurality of rooms, together with information identifying an individual entity of humans; an individual preference learning unit configured to store, for each of the humans, the air-conditioning preference information input to the input unit; an estimation unit configured to estimate presence or absence of any human in each of the plurality of rooms, or a human presence ratio representing a number of humans present per unit time in each of the plurality of rooms, on a basis of the individual behavior pattern information stored in the individual behavior pattern learning unit, and determine a target temperature for each of the plurality of rooms on a basis of the individual behavior pattern information stored in the individual behavior pattern learning unit and the air-conditioning preference information stored in the individual preference learning unit, and a controller configured to control the ventilation device and the air-conditioning apparatus on a basis of presence or absence of the human in each of the plurality of rooms estimated by the estimation unit, or the human presence ratio in each of the plurality of rooms estimated by the estimation unit, and the target temperature determined by the estimation unit. at least one ventilation device configured to circulate air among a plurality of rooms; at least one air-conditioning apparatus provided in at least one of the plurality of rooms; a human detector provided in each of the plurality of rooms and configured to detect at least one of a height and a body temperature identifying an individual entity of a human present in a corresponding one of the rooms in which the human detector is provided; an individual behavior pattern learning unit configured to receive information obtained through detection by the human detector as individual behavior pattern information identifying the individual entity of the human present in each of the plurality of rooms, and store the individual behavior pattern information for each of the plurality of rooms; an input unit configured to receive input of air-conditioning preference information including at least a setting temperature for each of the plurality of rooms, together with information identifying an individual entity of humans; an individual preference learning unit configured to store, for each of the humans, the air-conditioning preference information input to the input unit; an estimation unit configured to estimate presence or absence of any human in each of the plurality of rooms, or a human presence ratio representing a number of humans present per unit time in each of the plurality of rooms, on a basis of the individual behavior pattern information stored in the individual behavior pattern learning unit, and determine a target temperature for each of the plurality of rooms on a basis of the individual behavior pattern information stored in the individual behavior pattern learning unit and the air-conditioning preference information stored in the individual preference learning unit, and a controller configured to control the ventilation device and the air-conditioning apparatus on a basis of presence or absence of the human in each of the plurality of rooms estimated by the estimation unit, or the human presence ratio in each of the plurality of rooms estimated by the estimation unit, and the target temperature determined by the estimation unit.