The work aims to find out the quick-wear parts of complete pruning machine at the time of falling off, so as to design a more reasonable structure and buffer protective packaging. Simulation analysis was carried out for two kinds of drop conditions of the pruning machine based on Hypermesh and LS-DYNA, namely horizontal falling and vertical lateral falling. In these two cases, the rotary tube would be subject to stress concentration and damaged. This would affect the service life of the pruning machine. In the following product design, the emphasis should be placed on the optimized design of the rotary tube’s structure. In the process of transportation, the stress should focus on the design of a reasonable transport packaging protection structure for the rotary tube components.