Abstract: In view of the problems of low speed, low efficiency, high risk coefficient and more personnel participation in the existing mine tunnel, a kind of drill-anchor robot was proposed, and its layout net unit was designed. modeling it in three dimensions software base on SolidWorks, the key components were analyzed and the finite element analysis was carried out in ANSYS software, and the simplified sample model of the layout net unit of the drill-anchor robot was set up in ADAMS software, and drill-anchor robot of layout net unit was simulated and analyzed including catching the net, lifting the net. The results show that The overall structure design of the drill-anchor robot’s layout net unit was reasonable, and it satisfies the requirements of stable catching, moving and lifting posture of the supporting net, and the key components of layout net unit manipulator meet the requirements of rigidity and strength.