In order to realize high precision image motion compensation,the requirements of space camera system was put forward by analyzing the effect of aerocraft attitude on image motion compensation.The image motion match characteristics demaned by Modulation Transform Function(MTF) of camera was analysed to determine the permitted errors of image motion matching.Then,the Monto-Carlo method (statistic distribution method) was used to analyse and calculate the errors of image motion velocity.Finally,the attitude accuracy suitable for image motion compensation was abtained.The conclusions drawn by calculation suggest that the attitude accuracy should be higher than 0.1° and the attitude stability accuracy higher than 0.005°/s,which can meet the requirements of errors of image motion matching of 96 TDI-CCD integration progression.The method is simple,easy to implement and suitable for the study of image motion compensation of space camera system.