Abstract: In view of the existing problems in the integration and dynamic update of resource database, service chain is introduced into the update of resource database, with an aim to improve the quality of data in resource database and ensure the real-time property of database. Meanwhile, this intends to maintain the correlation of business to enhance the information value of resource data, in order to provide the foundation and supporting information for effective supervision and finer management of resources. This paper particularly elaborates on the connotations and main ideas of dynamic data update technology based on service chain and puts forward four key techniques to realize the dynamic update of resource databases, namely, change information retrieval based on data interception technology, data update service chain definition based on business rules, intelligent organization and call of service chain, monitoring and tracking of update process based on data quality. In the end, this paper presents a comprehensive application demonstration in Chengdu City, builds a central database of land and resources in Chengdu and connects each business database to the central database, so as to realize dynamic linkage update between the business database of land and resources and the central database in Chengdu to support and serve all the work of land and resources management of Chengdu in an all-round way.