Stress-energy method is the major method of determining cushioning curves of cushioning materials. Cushioning curves at any height could be predicted by this method with easy operation. As the calculation is based on the data from experiments, fairly accurate and complete cushioning curve could be gotten. But the assumption of stress-energy method is there is no energy lost during the impacting process of buffer materials, and this method is more easily influenced by artificial factors, therefore the energy calculated by using dynamic energy formula of stress-energy method is not precise enough. The existing application research on stress-energy method could be divided into two aspects, direct application and the improved application. In future study, the energy level and falling times could be properly reduced with the optimization of data fitting function selection and experimental data in order to save materials and experiment time to get more accurate cushioning curves.