The process of deviant angle adjustment and the factors of deviant angle matching error were analyzed. Then,the mathematical model for corresponding relation between scanning camera pixels and the point of scenery was established. According to cumulative TDI CCD imaging exceeding the corresponding pixel horizontal and vertical offset,camera imaging was simulated when stability of satellite attitude changed. At the same time,the uniaxial flotation turntable and plane array CCD were used to imaging experiment. The experiment imaging speed should match simulation imaging speed and the offset of plane array CCD imaging was cumulated to simulate CCD push-broom image. At last,we used image contrast and cross-correlation similar measure simulation to analyze experimental imaging quality. Simulation and experimental imaging are just difference only 0.03 in the imaging contrast and cross-correlation similar measure,which can meet the needs of experiments. The model can be further used for image simulation for testing satellite camera on the ground.