Based on optimized approval process and simplified requirements on declaration materials, Beijing completed the update and optimization of online electronic offer system for construction land projects recently in order to strengthen the management of land requisition and agricultural land conversion and further regulate the declaration of construction land. The approval time are greatly shortened and the service level for land users are also promoted through standardizing specific declaration standards for vector data, strengthening approval of electronic scanning and graphic files and making accurate technical inspection of completeness, scanning quality, coordination topology and others of the offer. And the current strict entry mechanism for online electronic offer not only improves the approval accurate of new construction land area, occupied agricultural land area and occupied farmland area, but also achieves data sharing and seamless connection with filing of construction land of the Ministry of Land and Resources and the land change survey in Beijing.