An electrostatic atomizing device includes an atomizing electrode which generates charged fine water particles negatively charged in the form of mist, by generating an electric field when a high negative voltage is applied thereto in a state in which water is supplied a water supply portion which supplies the water to the atomizing electrode a discharge detection portion which detects whether negative ion discharge, indicating discharge in which only negative ions are generated without generating the charged fine water particles, is occurring at the atomizing electrode or not and a control portion which reduces the electric field intensity of the electric field generated by the atomizing electrode when the discharge detection portion detects the occurrence of the negative ion discharge.