The work aims to explore the cushioning mechanical properties of acetate fiber packaging sample rod for burst bead, and reduce the damage of the burst bead caused by the impact load of the sample rod during high speed transportation. The constitutive model of the burst bead material was defined by the superelastic model method, and the two key parameters of the material hyperelastic model were determined through simulation and program iteration. In addition, Abaqus software was used to simulate the axial and radial extrusion of the acetate fiber packaging sample rod. Finally, a test platform was established to carry out tensile test and extrusion test on the sample rod and burst bead. When the superelastic material parameters were C10=5.2 MPa and D1=0.38 kPa, the relative error between the pressure F of pressure plate and the maximum pressure borne by the bead burst was 3.4% after calculated through simulation, which met the simulation requirements of the cushioning mechanical properties of the acetate fiber packaging sample rod. With the gradual increase of the radial and axial extrusion displacement of the acetate fiber sample rod, the support force of the pressure plate also gradually increased, and the cushioning effect of the acetate packaging sample rod on the burst beads under axial force was better. The establishment of constitutive model for burst bead material and the simulation test analysis provide a theoretical basis for the high speed transportation of acetate fiber packaging sample rod.