The invention provides a method for reducing induction quenching deformation of a gear. After a partitioned compensation method induction quenching process is used for heat treatment of the gear, tooth profile and tooth trace deformation has a directional rule, after the induction quenching process is carried out, tooth profile deviation is negative, tooth trace deviation is positive, and measures are conveniently taken to eliminate deformation deviation after heating when the gear is roughly cut before heating. The induction quenching deformation of the gear is reduced, the quality of the gear is improved, the manufacturing cost of the gear is reduced, and the precise heat treatment of the gear is realized. Meanwhile, according to the scheme, the induction quenching deformation amount is small by adopting a partitioned tooth separation compensation method.