This paper reviews Letv’s exploration and practice of the internet ecological project management system in the 2014-2017 period in the Internet era. According to the actual requirements and development of Letv’s internet ecological business model，this paper demonstrates the dual responsibility system of project organization based on strong matrix models and constructs a closed-loop project management system（strategy-execution，feedback-strategic optimization），considering the dual responsibility system as a core concept to support Letv’s ecological development.