Environmental rights is not only one of the legitimate rights and interests of farmers, but also the prerequisite and basis for farmers to survive and develop. Green microfinance can promote social equity and environmental sustainability, and it is also an effective way to boost farmers' environmental rights. After introducing the study of American scholars on the green microfinance and its connotation, this paper probes into the correlation between green microfinance and how to boost farmers' environment right. In view of the fact that the green microfinance helps to diminish poverty and protect environment, this paper describes three channels that green microfinance uses to boost farmers 'environmental rights, namely motivating farmers to use clean energy, financially supporting the micro- enterprises to develop clean technologies, or developing new energy to support recycling. In addition, in view of potential difficulties existing in its implementation, namely the uncertainty of the subject, the narrow financing channels, the unclear property rights, the flaws in governance structure, the unclear supervision of green microfinance, this paper provides several effective solutions, namely clarifying the green micro- credit subjects, broadening financing channels, regulating green microcredit procedures legal system and building diversified market accesses for the supervision and management system.