Abstract: A hair clip, comprising: a lower clip body and an upper clip body pivotally connected together at one end of each; corresponding locking and fixing devices formed at the other ends of said lower clip body and upper clip body; wherein a plastic slice is formed at an end of an elastic locking clip adjacent to a wall of the locking and fixing device formed at said upper clip body and is pressed against said wall in a tilted relation. The hair clip according to the invention implements an improved locking and fixing method and produces the same locking and fixing effect as the locking and fixing method commonly used for prior art hair clips does. Moreover, since the locking and fixing devices and the plastic slice controlling their switch can be formed one-piece, manufacture of the hair clip is simplified.