ZnO1鈥?i>x/graphene hybrid photocatalyst was prepared via a facile in-situ reduction of graphene oxide and ZnO1鈥?i>x surface defect oxide. The hybrid photocatlayst showed enhanced photocatalytic activity for the photodegradation of methylene blue. The photocorrosion of ZnO1鈥搙 was successfully inhibited by graphene hybridation. ZnO1鈥?i>x/graphene hybrid photocatalyst with 1.2 wt % graphene showed the optimized photocatalytic activity. The photocatalytic activity of ZnO1鈥?i>x/graphene-1.2 wt % under visible and UV light was about 4.6 and 1.2 times that of ZnO1鈥?i>x sample, respectively. The photocurrent intensity of ZnO1鈥?i>x under visible and UV light irradiation can be enhanced by 2 and 3.5 times by graphene hybridization. The enhancement of photocatalytic activity and photocurrent intensity in ZnO1鈥?i>x/graphene was attributed to the synergistic effect between graphene and ZnO1鈥?i>x for high separation efficiency of photoinduced electron鈥揾ole pairs mainly resulting from the promotion of HOMO orbit of graphene and the Oi鈥?defect level of ZnO1鈥?i>x in ZnO1鈥?i>x/graphene.