The invention belongs to the technical field of oil-extracting plant planting, and specifically relates to a transplanting method for preventing root rot of vernicia fordii. According to the method, amagnesium peroxide mixture is buried at the root of vernicia fordii and releases oxygen when encountering water so as to increase the oxygen content in the soil, thereby inhibiting the activity of fusarium, even blocking the parasitism of the fusarium, and improving the growth of vernicia fordii; a minute amount of plant acid is applied to dissolve the precipitation of magnesium hydroxide, thereby effectively preventing soil hardening caused by the formation of excessive magnesium hydroxide precipitation, being capable of providing sufficient magnesium for the growth of vernicia fordii at thesame time, increasing photosynthesis of vernicia fordii, and thus improving the growth vigor and fruit bearing rate of vernicia fordii; cactus is inter-planted in a vernicia fordii plantation so as to increase the oxygen content in the plantation, thereby reducing the parasitic possibility of the fusarium, and thus reducing the risk of getting root rot of vernicia fordii; and other species are inter-planted, thereby effectively preventing the soil hardening, increasing the organic matter content of the plantation soil, and improving the growth vigor of vernicia fordii.