The research is devoted to the development of ideas for application of the financial and investment mechanism in the field of environmental management with the joint participation of the state and representatives of the business community. During the research, the authors used methods of structural and logical analysis and expert assessments. The research hypothesis is based on the idea that the implementation of socially oriented projects in the field of environmental management should be carried out using the financial and investment mechanism of public-private partnership. At the same time, the state will get not only an economic effect in the form of reducing the payback period of investment projects and a positive financial result, but also a social effect in the form of attracting business to environmental problems, supporting special tourist zones of the country and introducing ecotourism and a healthy lifestyle of the nation among preschool and school-age children. The authors analyzed scientific approaches to understanding the term “social entrepreneurship”, the author’s definition of social entrepreneurship and social investment is supplemented and proposed, five business processes are identified and classified in which a social enterprise is developed and financed. As practical recommendations for combining the ideas of social entrepreneurship in the field of ecotourism, justified by certain authors of business processes, and the use of a financing mechanism in the form of public-private partnership on the example of the already tested scheme for obtaining annual vouchers to children’s country camps, the socially oriented investment project Academy “Go green hand” is proposed to support the domestic tourism industry and develop investments in the country’s ecology.