Technological evolution courses of many industries indicate that discontinuous technology appearance provides opportunity for manufacturing enterprises to re-establish their competitive advantage. Related empirical research indicates that failure rates of investment on R&D and marketing are up to 80%, if selected entrance time of window opportunity is wrong and the window opportunity is less than 3 years. Through constructing model, the dynamic change characteristic of window opportunity is analyzed in the context of discontinuous technological change. Choice of entrance time of window opportunity is affected by technology diffusion, product diffusion, innovation imitational herd behaviors, and the cost for forming first mover advantage. Enterprises should grasp dynamic change characteristic of window opportunity based on their capability to choose the suitable entrance time of window opportunity in order to gain fine innovation performance.