This paper took the ram airdrop airbag as the research object, and simulated its landing process to research its cushion performance. The paper established a geometric model of the airbag and equipment through SolidWorks software, which was then imported into the finite element analysis software Ansys/LS-DYNA and meshed, loaded and solved. The simulation results were analyzed using the post-processing software Ls-prepost. The variation curves of volume and pressure of the airbag as well as the displacement, velocity and acceleration of the airdrop equipment were obtained. During the landing process, the maximum pressure of the airbag was 0.198 MPa, and the landing impact acceleration peak value of the airdrop equipment was 175 m/s2 (17.9g). The biggest impact overload of the airdrop equipment was 17.9g, and the maximum overload Amax of the equipment was smaller than the allowed overload of 20g, meeting the performance requirements. The airbag internal pressure peak value was important to the design of the airbag, with the airbag peak pressure of 0.198 MPa as the reference standard, it should be ensured that the airbag could bear the corresponding peak pressure in respect of airbag material selection and airbag processing, in order to avoid buffer balloon burst.