With the development of Internet technology and the MOOC Courses, the intelligent answering also has drown more attention, because it can solve user unsure questions timely. Intelligent answering system typically includes comprehension questions, information retrieval and answer extraction and selection. Question classification is a part of comprehension questions, which directly affects the accuracy of the final answers. It is verified by the training and test sets using the improving method which is based on support vector machine. The results show this method get high classification accuracy on intelligent answering.