An automatic checking strategy and realization method for Access operations based on XML technique was given. First, operation information was extracted into a text file. Then, the data of txt format was expressed in simple and easy XML as filtered by the configuration file recording operation points, with the tag was related to database Attributes. Finally, the XML documents from the model and the student were analyzed and compared to implement checking. In the article the method of the extraction, the construction of the configuration, the XML representation, the checking strategies accommodated to flexibility and diversity, and the errors locating was discussed in details. The system has been used in teaching effectively. It is applied to the test as well as homework.