The utility model relates to a pair of hair scissors. A pair of hair scissors mainly solves technical problems that a limit comb of a pair of existing hair scissors is a whole, a left side and a right side of the limit comb can not move relatively, and hair inclined surface gradually varied effect and cutting of various length of hair can not be achieved. Two sides of a shell of a scissors body are respectively provided with a first limit strip and a second limit strip, wherein both the first limit strip and the second limit strip are in straight reciprocating motion along an edge direction of the shell of the scissors body, and one end portion of the first limit strip and one end portion of the second limit strip stretch out two sides of a hair-cutting unit toward a head of the scissors body. Due to the fact that protrusive height of the left side and the right side of the limit comb of the hair scissors can be controlled, the hair scissors have the advantages that gradually varied hair-cutting effect of both sides can be achieved, both sides of the limit comb is capable of achieving hair-cutting effect of various lengths, configuration of a plurality of limit combs is needless, energy waste can be effectively avoided and cost can be saved.