With the rapid economic and social development and the new Internet media sweeping the globe，China’s documentary industry has achieved remarkable results，and its market value has gradually become prominent. By sorting out the status of the development of China’s documentary industry and analyzing the factors affecting the international competitiveness of China’s documentary industry based on Michael Porter’s diamond theory，it can be concluded that we have rich cultural resources to tap，we are investing in capital.，Market demand，and related and supporting industries，there are still many deficiencies. Throughout the world’s documentary situation，with the development of the Internet economy and the maturity of big data technology，new media documentaries have gradually become a battleground for military soldiers. The exploration of documentaries on the Bilibili video website for the development of new media documentaries in China A new way out.