数学课堂教学离不开课堂提问，课堂提问有利于激发学生的思维，提高学生的思考能力。目前中专师生之间交流的主要途径也只有课堂教学，在此交流中，设疑无疑是刺激学生思维，发展学生智力的好办法。通过课堂设疑可以迅速捕捉到学生对知识的理解程度以及教学目标实现与否的信息 Math classroom teaching can not do without classroom questions, classroom questioning is conducive to inspire students’ thinking, improve students’ thinking ability. At present, the main method of communication between teachers and students of secondary schools is only classroom teaching. In this exchange, the establishment of doubt is no doubt a good way to stimulate students’ thinking and develop their intelligence. Students can quickly capture the level of understanding of the students and the achievement of the teaching objectives through classroom doubts.