To provide a sanitary and highly safe cosmetic applicator with an application part securely attached to a rod, durable for a long period of time, and a method of manufacturing the same.

A tightening thread 12 is wound around an application part 11 covering a rod 13 at a position where the interior surface of the application part 11 faces a notched groove part 13a, and the application part 11 is tied to a core 131 with the tightening thread 12 cut into the notched groove part 13a at the position. Then, a heater head 3 is applied to a prescribed position in the tightening thread 12 wound around the application part 11 to heat and fuse the thread to the application part 11 at a prescribed temperature. Finally, the tightening thread 12 fed from the top of a rotary arm 21 is heated and cut off to complete the cosmetic applicator 1.