Everything has two sides. What the Internet brings to mathematics education can be described as the coexistence of positive energy and negative energy, and the coexistence of opportunities and challenges. In the era of "internet plus", the entertainment function of mathematics education will obviously increase, but the educational function may be weakened; The fragmentation of mathematics education may reduce learners' concentration and learning depth; Teachers and students must face more complicated mathematics education knowledge. Therefore, it is necessary for us to accurately grasp the "internet plus" demand in mathematics education, prepare for the "internet plus" in mathematics education, and always bear in mind that technology and form serve the content, and teaching quality is the core of mathematics education under the background of "networking+".