The study attempts to investigate Polish practices to support the eco-innovation in agriculture that ensure the sustainable development of the sector. The specificities and barriers to ecoinnovative activities of agricultural enterprises were defined. The paper focuses on the analysis of the supporting mechanism of eco-innovation in Polish agriculture both on national and EU’s levels. Using the factor and SWOT analyses, the author determines the effectiveness, opportunities and challenges of Polish support of agri-ecological innovation. The relationships between the eco-innovative indicators and the level of support for farmers are also shown.