Abstract: The spatial layout and development trend of villages are the main objects and important contents of the comprehensive improvement of land. In order to strengthen the guarantee of land use for rural revitalization and improve the policy system for integration and development of urban and rural by promoting rural development in a classified manner and revitalizing rural land stock for construction, the strategic plan for rural revitalization (2018-2020) is proposed. Based on the new connotation of village and town layout optimization, the index system covering the characteristics of “urban radiation”, “resource endowment” and “ecological security” is constructed, taking Suining county of Jiangsu province as the research area. The identification of village type is carried out. The method of Pajek complex network analysis is used to construct the village hierarchy “central village-secondary central village-general village”. On the basis of the village type identification and grade system classification results, the development function of villages are defined, then the target value is determined, the scale potential, pattern potential, quality potential and comprehensive potential of the village are explored. The potential of the village is determined according to the method of natural fault point. The results show that: 1) Rural development is heterogeneous. In the process of rapid urbanization, the geographical location, spatial structure and scale form of villages are undergoing great changes, and the differences within the system are increasingly expanding. The results of village type identification and grade system classification can provide effective support for the evaluation of the potential of the village, the priority selection of the remediation area and the arrangement of the remediation time sequence. 2) The study area can be divided into 9 types of single and compound village, including suburban integration, activation optimization, characteristic development, ecological protection, suburban integration-ecological protection, suburban integration-feature upgrade, feature upgrade-ecological protection, suburban integration-characteristic increases ecological protection, demolition and relocation. Finally according to the “scale-pattern-quality” as well as the comprehensive renovation potential is calculated as a result, lower, low, medium, high, higher 5 level. 3) The dominant village type is the activation optimization type in the study area. The potential area of reclamation in the county is 627.51 hm2, and the potential area of recovery is 17 299.91 hm2. This research on the development function, potential and comprehensive countermeasures of villages can provide references for the optimization and reconstruction of village, the regulation of policy regulation linking the increase and decrease of urban and rural construction land and the implementation of comprehensive land improvement in the whole region.