The invention provides a model rendering method and device and a storage medium, the method is applied to a graphics processing unit GPU, and the method comprises the following steps: receiving a first position point from a central processing unit CPU; determining a basic model according to the first position point; determining a rejecting area in the basic model, and determining a target model according to the basic model and the rejecting area; and performing illumination rendering on the target model. According to the model rendering method and device and the storage medium, the GPU only receives one position point from the CPU, the expected rendering effect can be achieved, and the operation pressure of the CPU in the model rendering process is reduced.