Expanding and deepening the practice of regional party construction, integrating strength and society in a larger space and field, and playing a leading role in the integration of urban and rural development at county level are the era mission of urban and rural grass-roots party organizations to implement the spirit of the 20th CPC National Congress and serve the overall situation of modernization. To make the regional party construction lead the integrated development of urban and rural areas in the county, it requires the urban and rural grass-roots party organizations to actively respond to changes in the social ecological environment, actively adjust the logic of grass-roots party building action, and systematically reconstruct the system and mechanism of grass-roots party building. Therefore, a series of action strategies are needed to promote the flow of elements, structural integration, and functional interoperability between urban and rural areas in the county through the guidance of structure, function, ability, and mechanism, so as to ensure the effective operation of the urban-rural integration development system and mechanism within the county.