With the national attention to urban greening and vegetation restoration,Korean pine seedlings have been widely planted,bringing higher economic and ecological benefits to planters.The seedling operation is an important part of the Korean pine seedling planting process.In order to improve the efficiency of seedling and ensure the surviv-al rate of the seedlings,a three-piece excavator type seedling lifter is designed.According to the characteristic pa-rameters of the sandy soil of the Korean pine nursery and the structural parameters of the seedling lifter,the stress condition of the seedling lifter during operation is analyzed.The maximum stress,maximum deformation,fatigue life and safety factorof the seedling raising device are obtained by using ANSYS to analyze the strength and fatigue of the seedling raising device.The simulation results show parameters meet the requirements of use.After experimental tests,the average rate of seedling injury is 4.59％,which is lower than 6％,which meets the actual operation re-quirements.
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