Abstract: Due to the nonlinear relation between the radiation intensity and the azimuth, the coverage of the modeling and the visual simulation of the directional X-ray radiation field is rarely reported. This paper analyzes and obtains the nonlinear description of the anodic effect, and then discusses the relationship between this effect and the relative intensity of the tube axis in the horizontal and vertical directions, the mapping of the radiation intensity from any point in the radiation field to the standard radiation field is established, then the general radiation field model is constructed and then the algorithm is designed for simulation, which provides the decision-making basis for thenradiography experiment and the later digitization and intelligence of the X-ray system.