Abstract: With the development of remote sensing and aerophotography, we can quickly get all kinds of inexpensive image with high resolution. To efficiently manage these increasing high-volume data, the spatial database management system is the best solution which can provide convenient, quick management and support multiusers accessing safely. Because there are hetero-data image stored in the database, and in the realization of the current image database management system only can provide the policy of processing them separately. However we usually need the centralized meta data during the searching and location of what we want. In this paper the author puts forwards a method of how to derive the whole metadata from the decentralized metadata and then how to use these metadata to help quickly searching and locating the target. At last the author realized the searching function based on the metadata and spatial extent in the system, the results show that this method has high efficiency.