Automatic dosing device for supplying the diluted drug, including a dilution unit for diluting the drug supplied from the dosing pump using water supplied from the outside, a water tank in which water supplied from the outside is stored, and water stored in the water tank A pressurized pump for supplying pressure to the pressurized pump, a filtration device for filtering while passing water supplied from the pressurizing pump, a mixing unit for mixing the first water supplied from the filtration device and the drug supplied from the automatic dosing device； A high pressure pump supplying a constant pressure to the mixed liquid of the water and the drug discharged from the mixing unit, and supplying the mixed water to the livestock house； a flow meter for measuring the amount of the first water supplied from the water tank； and in the livestock house and the livestock house. Sensing unit for measuring the humidity and temperature of the outside and the quality of the air in the house, and the temperature, humidity and ventilation in the house As a method for controlling a mist spraying system comprising a livestock environment control unit for controlling and a control unit for controlling the dilution concentration of the automatic dosing device, The control method of the ICT convergence smart house management system according to the present invention includes a data collection step of receiving the temperature and humidity of the inside and outside of the house and the air quality data from the sensing unit； A concentration calculating step of calculating a concentration of the mixed pressure liquid corresponding to a target humidity from the transmitted data； A diluent concentration calculating step of receiving a quantity of water supplied from the flow meter according to the calculated concentration of the mixed liquid and calculating a dilution concentration in the dilution unit； And a first diluent preparation step of diluting the dilution unit according to th
