Study of workload in non-direct vision driving system is presented.An experiment of comparison to the automobiles with traditional direct vision driving system was made,adopting Brave Warrior of Dong-feng as example.Based on the psychological and physiological indexs of heart rate,brain wave,oxyhemoglobin saturation and questionnaire,a system of evaluating the workload of the driver was raised.The research studied the principles and rules of how the specific index affected the workload of driving system,and preliminarily searched for the methods of decreasing the workload of non-direct vision driving system.The date analysis indicates that the workload of non-direct vision system is larger than that of the direct vision system.