According to the training objectives and professional quality of Safety Engineering,Principles of Chemical Engineering has less class period and students are difficult to learn. In order to enhance the quality and effect of teaching and learning process of Principles of Chemical Engineering, taking chemical safety as an extension of teaching, the teaching reform of Principles of Chemical Engineering course was discussed from double subjects, such as further explanation on typical unit operation, updating teaching means, practice and syncretic security concept. A solid foundation was establishe...