Together with the development of "Internet+", "Internet+ " teaching has become an important direction of College Mathematics teaching reform. Due to the restriction of textbooks, teaching methods and teaching concepts, College Mathematics classroom teaching has exposed with many problems such as backward ideas, inappropriate methods, lack of interaction and dull content. All the above affects the teaching effect directly. Therefore, we should examine the problems in the context of "Internet+ " Teaching, optimize the teaching idea with the Internet thinking, and optimize the teaching process and mode with Internet technology, so as to achieve the innovative development of college mathematics classroom teaching.