Abstract: 【Objective】 To study the physical characteristics of Apocynumapocynum and test the mechanical characteristics of stem in the hope of providing theoretical basis for the design of the Apocynum apocynum binder harvester. 【Methods】 The plant typecharacteristics and stem structure were observed and determined.Then the effects of stem diameter, phloem and loading speed on mechanical properties of Apocynum apocynum stem were studied by means of statistical data analysis. 【Results】 There was no yield stage in stem deformation during overwintering dormancy. The radial compressive load and radial compressive elastic modulus of the skinned and skinless stems first increased with the increase of diameter and then decreased slowly, and the skinned stems were larger than the skinless stems. The bending load and elastic modulus of stem increased and decreased with the increase of stem diameter. The shear load increased with the increase of stem diameter, and the shear energy consumption decreased and increased with the increase of loading speed and stem diameter, respectively. The influence of stem diameter on shear energy consumption decreases with the increase of loading speed. 【Conclusion】 It is necessary to consider the influence of stem structure, high cutting speed, tool front force, high hardness and high wear-resistant materials, cutting angle optimization and other design principles in the design and development of Apocynum apocynum binder harvester.