The present disclosure relates to a zipper fastener including: an upper plate; a lower plate disposed to correspond to the upper plate; a head disposed in a predetermined region of an upper surface of the upper plate; and a pull body configured to be fastened to the head. The head includes a body portion and a flange portion extending to one side end of the body portion. The pull body includes a main body portion. The main body portion includes a main body portion lower surface disposed at a lower portion of the main body portion, a main body portion first side surface disposed at a first side of the main body portion, and a main body portion second side surface disposed at a second side of the main body portion and disposed to face the main body portion first side surface.