Abstract: Based on the theory of open innovation, the study discusses the growth trends and characteristics of the enterprises ambidexterity capability (EAC) under the influence of technology-sourcing overseas mergers and acquisitions (M&A), and examines the influence of external technology resource attributes and internal absorptive capacity using sample companies from Shanghai and Shenzhen stock exchange. The results show that the EAC has three different growth trajectories after the technology- sourcing overseas M&A, the growth process of exploitative capability exist “Growth mode” and “Decline mode”, but the exploratory capability has “Growth mode” and “inverted U mode”, and the initial level of EAC in “Growth mode” are superior than other two modes. The complementarity of technology resources has a significant positive impact on the exploratory and exploitative capability, while the similarity only has a significant positive impact on the exploitative capability; the absorptive capacity and its interaction with the complementarity and similarity of technological resource have significant positive effects on the EAC respectively.