Abstract: In this paper an information Filter with Vector Measurements (IFVEM)is presented to cope with the problem in satellite attitude filtering with the vector measurements of star sensors.The analyses show that the IFVEM can process both the single vector measurement and multiple vector measrement in a common frame and simplify the computer program, and it saves computation compared to the conventional Kalman filter.Simulation results are presented to demonstrate the feasibility of the IFVEM in satellite attitude determination.