Aiming at the problems of the traditional teaching process of "silicon dioxide and information materials" such as the lack of appropriate experimental inquiry activities, the weak attraction of teaching situational materials to students, and the lack of in-depth analysis of the reaction principle of high-purity silicon preparation, the corresponding teaching improvement had been performed by creating of real and valuable scenarios, like "cell phone chip" and designing experimental research activities such as the "reaction of nano silicon dioxide and sodium hydroxide solution". A series of measures should be designed to help students deeply understand the principle of high purity silicon preparation, and a series of corresponding teaching improvements should be made On this basis, teaching practice were carried out.