Abstract: The importance and characteristics of the designed experiments are investigated by Jilin Institute of Chemical Technology majoring in material forming and control engineering teaching as an example. The influence on the engineering practice ability of students is discussed. And the role of designed experiments for students of engineering practice and innovation capability are summarized and cited. Some thoughts on designed experiments are proposed. Practice shows that: the designed experiments, not only improve the students experimental ability and comprehensive analysis of the problems, the ability of finding and solving problems, but also make innovations in engineering practice ability of the students to fully exercise.