[Problem] To provide a rotary atomizing head that can be disassembled for cleaning and can also change the color thereof by internal cleaning without being disassembled. [Solution] A mechanism component (4) comprises: a side wall (12) that extends rearward from the outer circumferential edge of a front wall (10) constituting a hub portion and continues in the circumferential direction; a plurality of legs (14) having a pawl (14a); and a bottom portion (18) that continues from the rear end of the side wall (12). The mechanism component (4) is detachably mounted in a central recess portion (6) of an atomizing head body (2). A spoon-cut groove (34) is formed on the bottom portion (18) of the mechanism component (4). A peripheral wall (8) of the central recess portion (6) of the atomizing head body (2) is formed of an inclined wall. An outer circumferential surface (12a) of the side wall (12) of the mechanism component (4) is also inclined corresponding to the inclination of the peripheral wall (8). The entire outer circumferential surface (12a) is substantially in contact with the peripheral wall (8) of the central recess portion (6).
