Existing research does not explain the construction of the 5G business ecosystem at the enterprise level. Using the ethod of case study, through the analysis of the development and structure of Huawei 5G business ecosystem, we explore the construction model of enterprise 5G business ecosystem. On this basis, three experiences such as clear risk permutation and combination, accurate positioning of the enterprise and replace the business ecosystem, are proposed to give some inspirations for enterprises to build 5G business ecosystem. The main contribution is of reference value for the benign operation of 5G enterprises, and of practical significance for the development of 5G industry and enterprise innovation.