To study the safety of the PET lenticular carton (hereinafter referred to as the carton) when the whole package (hereinafter referred to as the package) is dropped, effective buffer protection is carried out according to the force transmission method and the force-bearing part during the fall process, so as to save the packaging cost. A 10 kg package was subjected to a drop impact test at a drop height of 0.61 m. Based on the test data, the impact acceleration and drop deformation parameters of the carton and foam cushion were obtained. As a result, the changing law of the impact force of the carton and foam cushion during the drop impact process is obtained. The foam cushion absorbs a large amount of impact, prolongs the impact pulse contact time, and reduces the impact force transmitted to the carton. When the package is dropped, the foam cushion begins to be compressed, absorbs the external impact force, and protects the inner carton. The damage to the carton during the rebound stage is greater than that at the beginning of the collision. All these prove that under the cushioning protection of the foam cushion and the outer corrugated box, the PET lenticular carton is safe and reliable to drop at a height of 0.61 m.