Abstract: The drawing method is more convenient than the analyzing method in solving the trusses with polyline shape and the trusses bearing slant loads. The methods and procedures of solving the internal force and support reaction of statically determinate truss are introduced by utilized the precision drawing function of the AutoCAD,and the application fields of the AutoCAD are increased. The exercisers can solve the internal force and support reaction of some structures with the AutoCAD at the time when they exerc...