Abstract: With the in-depth advancement of the innovation-driven development strategy,state-owned enterprises,as the core entities of scientific and technological innovation,play a crucial role in safeguarding national strategic security and advancing industrial upgrading through the construction of their innovation and R&D ecosystems. Taking a domestic marine oil and gas development engineering enterprise as the research object,this paper analyzes its practical paths for building a multi-dimensional innovation-integrated innovation and R&D ecosystem,based on evaluation systems covering innovation strategy,organization,resources,and ecosystem,while benchmarking against world-class engineering companies. By virtue of model innovation,mechanism innovation,and management innovation,the enterprise has developed distinctive models such as the “three-tiered sci-tech innovation platform”,“university-enterprise joint research institutes”,and “mechanisms of ‘soliciting proposals to address key challenges’ and ‘competition among teams’”. These efforts have enabled breakthroughs in key core technologies and the efficient transformation of scientific and technological achievements.

Key words: state-owned enterprise, innovation and R&D ecosystem, multi-dimensional innovation integration, scientific and technological innovation