This paper analyzed the principles of learning and associative memoryof artificial neural network, while combining with component-based software engineering (CBSE) development ideas, and designed dynamic data query component. To Innovatively and effectively combinate neural network (Instar rule) with the data query concretely. Dynamic data query components mainly consist of five group elements, in addition to system interface group element as a characteristic group element, the other as functional group elements. Under control flow, around the user's service request to analyze data profiling and query information feedback. In addition, dynamic data query component of internal work processes is briefly described. The design will be of practical value for the database management system.