Abstract: The general structural formation of the direct insert planter is proposed through studying and analyzing its basic working principle. On the basis of the research and the principal study of the hole former of direct insert planter,the hole former which can carry out the direct insert motion and its auxiliary working parts are designed. The characteristic of hole former motion of direct insert planter is also analyzed,and the theoretical analysis proves that the hole former can insert directly into soil within the period of its entering soil and coming out from soil.