Abstract: Studies and implements the intelligent retrieval, which has the function of automatic jump substation drawing first by building cad drawings associated model to study the data the relationship between the node and the node coding, and then contained in the drawings by the CAD drawings and data extraction, finally puts forward a data correlation is accomplished by means of a link between drawings drawings retrieval method, And in order to further realize the associative retrieval model, Qt is used to design and create a window interface, to achieve a rapid display of the target drawing information and convenient staff to query the required information function, according to the above research and development of substation secondary drawings intelligent management system.