Abstract
The Product Life Cycle Theory is a management tool can be used to forecast, plan, and control. It encourages enterprise to plan actively. Because of the distinct division of every step, we can estimate the location of the product in the curve based on the historical data, and determine the step of the product. We can also forecast the challenge and exploit the strategy according to the Product Life Cycle Theory. The research carries on the preliminary understanding of security industry. We compare with the strategy of the Product Life Cycle Theory based on the analysis of related secondary data and practical interview. Finally we get the product life cycle step of DVR at present, and the difference between it and the Product Life Cycle Theory. The result of analysis finds that the every enterprise in the industry has different estimation of the product life cycle step. Also, the future development of DVR is even more different. It happens due to the different estimation of the product life cycle step and the skill these enterprises can own and develop, so these enterprises develop the different strategy from each other.