The nail clip structure (2) has a plate spring-like stripe portion (5) made of resilient plastic material. A covering portion (13) is arranged on the plate spring-like stripe portion. The covering portion is provided with a ferromagnetic material portion (14). The plate spring-like stripe portion is made of multilayer glass-fiber reinforced thermosetting polymer material. The ferromagnetic material portion is made of iron, nickel and cobalt. Independent claims are included for the following: (1) a nail clip applicator for application of nail clip structure on nail of toe or finger； and (2) a nail clip and nail clip applicator set structure.
