Electrostatic sprayer is a sprayer which can make the ejected droplet produce significant adsorption effect on the target. The biggest difference from conventional spray is that the droplets ejected by electrostatic spray have strong static charges. After droplets are ejected, they are attracted by the anisotropic charges on the target. They will evenly adsorb on the target's upper and lower sides, forming a 360 degree adsorption effect. Therefore, when the electrostatic spray is used to deal with the target object, the droplet attachment path is significantly different from the conventional spray.