An electrospray atomizing device that sprays at a constant rate comprises a main unit containing a circuit board, an electrode plate, liquid tanks and syringes. The electrode plate includes the sealed liquid tanks and the syringes, and the circuit board connects electric current to the electrode plate and the syringes. The present invention further includes a power mechanism and a dosing device. The power mechanism drives a screw to ascend or descend, pushing the pistons of the dosing device through a speed changer. The syringes are connected with the liquid tanks. When the pistons are linked by the power mechanism and the speed changer to ascend, the liquid in the liquid tanks is sprayed at a constant rate through the syringes, forming mist which carries negative ions. When the pistons descend, the ambient liquid is sucked into the liquid tanks through the syringes, waiting for a next electrospray.本發明係提供一種定量電灑噴霧裝置，其係一主體，內包含有一變壓器、一電路板、一極板、數個液槽及數支針管，極板內有數個液槽，液槽為封閉上方設有針管，液槽內可存有液態水，電路板連接電流至極板及針管；其特徵在於：有一動力機構及一定量裝置，動力機構為經過變速裝置 ，驅動一螺桿升降，螺桿推動定量裝置之活塞，針管連通液槽，活塞受動力機構及變速裝置連動而上升下降，將液槽內液體經針管定量噴出而呈帶負離子霧氣，或活塞受動力機構之下降，經由針管吸取外界液體進入液槽內待下一次的電灑。
