Embodiments of the present disclosure disclose an image compositing method and apparatus, used for harmoniously obtaining and displaying a simulation object composited with an accessory, so that a user has desirable experience and visual enjoyment. The apparatus obtains first data of a skeletal model of a simulation object and skeleton data of an accessory to be composited to the simulation object and determines, based on the first data and the skeleton data of the accessory, a target skeleton that is on the skeletal model and that corresponds to the accessory. The apparatus copies first target data of the target skeleton from the first data and adjusts the first target data of the target skeleton based on preconfigured offset data of the target skeleton to obtain first adjusted data. Finally the apparatus performs shading based on the first adjusted data and the first data to obtain the simulation object composited with the accessory.