The work aims to explore the rationality of structural design for chandelier lampshade molded fiber buffering cushion and its product protection under random vibrational excitation. Modal analysis of chandelier lampshade molded fiber buffering cushion package was carried out by Ansys software to obtain natural frequency and modal shapes of packages. The random vibrational road excitation spectrum was applied to package of molded fiber buffering cushion for the simulation analysis to obtain the stress, strain nephogram, acceleration power spectral density response curves and other related parameters of the package, which could be used to analyze the rationality of structural designs for buffering cushion and its protective performance for products. The results of simulation analysis were verified by experiments. The stress value of the lampshade was much less than the maximum yield stress value (75 MPa) withstood by the lampshade material, so that the chandelier lampshade was well preserved. The results obtained by the finite element analysis were consistent with the measured results. The structural design of molded fiber buffering cushion is reasonable and its strength can meet the requirements of product protection. The finite element simulation analysis is reliable to solve the random vibration problem of molded fiber cushioning packaging products, which applies to the study on the performance of similar cushioning products in dynamic environment. It provides an effective method of analysis for the performance prediction, structural design and optimization of cushioning packaging products.