Bed sheet fixer

The utility model discloses a bed sheet fixer, which is used for realizing the fixation between a bed sheet and a mattress or a bed, solves the problems that the existing bed sheet fixer is relatively complicated in structure and troublesome to manufacture and assemble, and adopts the technical scheme that the bed sheet fixer comprises a body, an accommodating cavity is arranged in the body, and the accommodating cavity is arranged in the length direction of the body. A containing cavity is formed in the body, openings are formed in the two ends of the containing cavity, an insertion opening communicated with the containing cavity is formed in the side wall of the body, and the insertion opening extends in the length direction of the body, and is characterized in that an installation opening is formed in the position, at the insertion opening, of the body, a buckling piece is hinged into the installation opening and extends in the length direction of the body, and a limiting structure is arranged between the