Abstract: In this paper the drawing and diagram analysis function of AutoCAD(R14) were utilized for describing the stripping straw process, and the computer simulations were given and the relevant working parameters were explained through diagrams. It can provide evidence for determining the working parameters and construction parameters of stripped header for threshing prior to reaping combine.The program compiled by author has been applied to designing header of 4LGT-130 combine for rice and wheat.