The network camera is an important part of security system, and its reliability directly affects the performance of the security system. Now the research can obtain the overall stability of the security equipment or the stability of a single product, which may not guarantee the overall performance evaluation on the basis of individual differences; In view of this, this paper puts forward the reliability analysis method based on Winner process data. First of all, it sets up the equipment degradation model based on the Winner process and obtains prior data from equipment data samples using PPS sampling method, and determines its prior distribution; Secondly, it calculates confidence interval of maintenance cycle of the equipment, and builds a posteriori estimation for sample degradation data, and forecast maintenance cycle of security equipment. Finally, an example shows the significance of this research and the value of this method.