This research aims to analyze the development of eco-tourism in BrajaHarjosari village as a buffer village for the Way Kambas National Park (TNWK) Lampung in the industrial era 4.0. The research uses a qualitative approach with data collection techniques through observation, interviews, literature review, and documentation. The results show that Based on the discussion above, it can be concluded that the development of eco-tourism villages in the TNWK buffer area, especially Braja Harjosari village in the era of the industrial revolution 4.0, has utilized technology to build an eco-tourism market through digital marketing tourism, where efforts to promote and market an area or attraction tourism using digital media which includes the use of websites, social media, online advertising, marketing by electronic mail, online discussions and smartphone applications. However, the development of this eco-tourism village must pay attention to the rules and regulations that the government has