Critical thinking is a must for contemporary university students. In order to cultivate university students' critical thinking purposefully and effectively, two questionnaires were made on the critical thinking disposition and cultivation of 600 university students from one university by using critical thinking disposition inventory and cultivation of critical thinking in instruction. The result shows that the critical thinking dispositions of the subjects are weak on the whole, and there are no striking differences between students of different grades. As for the causes, the teachers' teaching philosophy, teaching contents, teaching methods and evaluations are not beneficial to the cultivation of students' critical thinking, thus some suggestions are put forward on strengthening the critical thinking of university students.