Abstract: Aimed at the failure data of product performance degradation, this paper puts forward a reliability analysis model based on accelerating degradation of the performance for small samples. the function relation between the acceleration stress and the product degradation data was set up under the highest stress, and the degradation data under the acceleration stress was converted into the data under the highest stress, and then the non-parametric statistics method was utilized to estimate the average degradation curve of the product under the highest stress. The relationship between the acceleration factor and the stress is fitted to estimate the mean and variance of the product life under constant stress, and evaluate the reliability of the product under different failure types. Finally, an example was used to verify the effectiveness of the method.