Aim at the problem of the current cassava harvester’s digging shovel was too heavy and have not easy to be buried and broken of the soil in the process of harvesting, a bionic digging shovel was designed imitating the shape of toe claw oriental mole cricket. Through extracting and polynomial fitting to outer contour of oriental mole cricket front toe claw, a king of 3D model of bionic digging shovel was designed by Pro/E software. Static strength was analyzed in the ANSYS Workbench software from finite element. Through comparing with the finite element analysis results of bar-type digging shovel and different tilt angle shovel,then selecting the angle of inclination 25 ° ~ 30 °, shovel teeth hollow bionic digging shovel, which has better mass, mechanical properties and lifetime. The study may be provided theoretical reference to designing and manufacturing the cassava harvester’s digging shovel.