Abstract: Because of complexity and uncertainty of innovation activities, lots of discontinuous innovation could not be completed in isolation. As a result, enterprises need to obtain complementary resources from outside to ensure the innovation of new products or technologies. In the process of looking for and acquiring complementary resources, various innovation entities are gradually connected and the process of building an innovative ecosystem is initiated. The process of linking various types of complementary resource providers is also the process of building an innovation ecosystem as well as the process of gaining legitimacy with the external environment. Then, in the context of discontinuous innovation, how should companies build an innovation ecosystem. Through the case study on EZ Station innovation ecosystem, it is found that: 1) Excessive innovation discontinuity may have a negative impact on the construction of innovation ecosystem, 2) Within the innovation ecosystem, innovation discontinuity mainly affects the system construction process through matching effect, that is, enterprises need to search for and connect with complement firms which is highly matched within the innovation activities; 3) Outside the innovation ecosystem, innovation discontinuity mainly affects the construction process of the system through legitimacy, that is, the innovation ecosystem needs to continuously interact with the external environment to obtain related legitimacy.