An electrostatic atomizer (50) for spraying a liquid, said electrostatic atomizer (50) comprising: a chamber (1) for storing the liquid (4) supplied from a liquid supply section (3)； and an air duct (7) connecting a retaining hole liquid surface (5) with an air hole (6), the air duct (7) being provided in the chamber (1), being locked or opened retaining hole liquid surface (5) for the liquid (4) depending on a level of a liquid surface of the liquid (4), the air hole (6) so being provided which can supply air from outside said electrostatic atomizer (50) to the chamber (1) through the air hole (6), wherein the air duct (7) has bent sections (8, 8a, 8b, 8c, 8d), characterized in that said atomizer (50) is designed so that the liquid supply from the supply section liquid (3) to the chamber (1) stops when the retaining hole liquid surface (5) is blocked by the liquid (4) ； in the air duct (7) there is formed a space (10, 10a, 10b) for holding the liquid； the air duct (7) has a first portion (7a) extending in a first direction that is perpendicular to or is inclined with respect to the liquid surface and a second portion (7b) extending in a second direction (9) whose angle with respect to the liquid surface is less than the first direction； a first bent section (8, 8a) is provided between the first part (7a) and the second part (7b) as one of the bent sections； and the second part (7b) is inclined with respect to the liquid surface so that a first side bent section thereof may be located closer to the liquid surface.Un atomizador electrostático (50) para pulverizar un líquido, comprendiendo dicho atomizador electrostático (50): una cámara (1) para almacenar el líquido (4) suministrado desde una sección de suministro de líquido (3)； y un conducto de aire (7) que conecta un orificio de retención de superficie líquida (5) con un orificio de aire (6), estando provisto el conducto de aire (7) en la cámara (1), siendo bloqueado o abierto el orificio de retención de superfici
