The work aims to study the influence of shape and structure parameters on the bearing and cushioning properties of pulp molded products, and to provide more reference for the cushioning structure design of pulp molded products. The physical properties of the material were obtained by a tensile test. The static compression test and finite element simulation of different shape units were carried out to verify the reliability of the simulation. Ansys Workbench/LS-DYNA was used to simulate the dynamic impact of square frustum units with three different shapes and three structural factors to evaluate their load-bearing performance and buffer performance in terms of energy absorption. The results showed that the bearing and buffering performance of the circular truncated cone was the best among the units with different shapes; With the increase of the slope, the ultimate load and energy absorption performance showed a downward trend. The ultimate load of the square frustum unit was the largest at 1°, followed by 4°, and the energy absorption performance was better and the change was relatively stable at 1°~4°; With the increasing aspect ratio, the ultimate load and energy absorption overall showed a downward trend; The ultimate load decreased with the increase of height, the energy absorption decreased at the height of 10~25 mm and increased at the height of 25~40 mm, the energy absorption per unit volume was relatively stable at 30~40 mm. Therefore, when designing the buffer structure, the circular truncated cone unit should be selected as far as possible, the best slope is 1°, followed by 4°, the best aspect ratio is 1~1.5, and the best height is 30~40 mm.