Cultivating students mathematical thinking is the core of mathematical education. Facing the new mathematics problem, the student often is very difficult to carry on the migration already the mathematics knowledge, can not smoothly apply own knowledge background, looks at the mathematics knowledge from the whole connection angle. Facing this problem, in teaching, teachers should pay attention to strengthening students'holistic view, regarding mathematical knowledge as a unified whole, paying attention to the internal relations of mathematical knowledge, and creating problem situations, train students to use existing knowledge to explore new knowledge and solve new problems.