The research of influence on TDICCD camera′ s imaging geometric quality can contribute to improving quality by advancing the design requirements of the platform. The quantitative relation of the platform attitude error and the imaging geometric quality based on the image point displacement was studied. The model of imaging parameters′ error caused by attitude error was built, including the error of image motion velocity, the drift angle correction and integral time. The relation between imaging parameters′ error and image motion combined with the strict geometric imaging model was deduced. The quantitative model of the geometric quality indexes under the influence of image motion was established, including angle distortion, length distortion, pixel resolution and positioning accuracy. The perfectly quantitative chain from attitude error to geometric quality indexes was created. The simulation experiment was conducted and the results indicate that the main influencing factor of geometric quality is the error of yaw angle.