Abstract: The goal of the aspect oriented development is to extract Aspect thought the whole software development process, and make it consistent though the transformation. However there is no standard method for AOSD that covers the software development from requirements to design activities. In this context, a new method is proposed to extract Aspect. It combines Theme/Doc and customized UML Profile design method, so that the Aspect can be explicitly extracted from the analysis process and mapped from model element to code directly. And the consistence of Aspect can be archived.