Rural development is a fundamental issue related to the national economy and people’s livelihood. From the new rural construction to the comprehensive implementation of the rural revitalization strategy，the top-level design about rural development has received more and more attention, and horizontal cooperation between the national competent department of rural policy formulation and other central government departments has been further strengthened. In order to deeply study the inter-governmental cooperation relationship of China’s rural policy，the paper uses 743 rural policy texts jointly issued by the central department between 2004 and 2021，takes the four large-scale institutional reforms of the State Council since 2003 as the stage nodes，and analyzes the characteristics of the inter-governmental cooperation network during the period with quantitative research methods. The study finds that the inter-governmental cooperation relationship of China’s rural policy has shown the dual characteristics of change and changelessness in recent years. In terms of change，the number of inter-governmental cooperation in China’s rural policy has been increasing，the scope of cooperation has been expanding, the complexity and intensity of cooperation have been increasing，and reached a climax after the rural revitalization strategy was proposed. The Ministry of Agriculture and Rural Affairs，the Ministry of Finance and the National Development and Reform Commission have gradually formed a stable “golden triangle” cooperation relationship. In addition，collaborative intergovernmental cooperation means a high level of departmental responsibilities and interests，and will also promote the increasingly close and stable cooperation between government departments，which can better escort the cause of rural revitalization in China.