In an electrostatic atomization
coating apparatus including a
nozzle head 3 including a plurality of
coating material ejection ports 12a; a
coating material chamber 4 that is provided inside the
nozzle head 3 and to which a coating material T is supplied via a coating
material supply path 7a, each of the coating material ejection ports 12a being in communication with the coating material chamber 4 via an individual
branch coating material path 13; and a
voltage application device 14 that provides a
potential difference between the
nozzle head 3 and an object to be coated, the coating material T ejected from each of the coating material ejection ports 12a via the coating
material supply path 7a, the coating material chamber 4, and the
branch coating material path 13 being brought into a charged state through application of a
voltage by the
voltage application device 14, an open / close valve device 5 that opens and closes all of the
branch coating material paths 13, or opens and closes a specific subset of a plurality of branch coating material paths out of all of the branch coating material paths 13 is provided. Thus, it is possible to prevent external air from entering the nozzle head 3, and the coating material from leaking to the outside of the nozzle head 3.