Engineering Chemistry is a basic chemistry course in engineering non-chemical major and a bridge between chemistry and engineering technology.It is indicated that engineering students have some doubts in chemistry learning,such as"What is the relationship between chemistry and engineering?","Why study chemistry?"and"What's the use of learning?",resulting in unsatisfactory learning effect.In order to stimulate students'interest and improve teaching quality,improve the adaptability of university learning and cultivate a scientific way of thinking,we have combined with the principle of"Two properties and One degree"and three concepts of Engineering Certification.Taking students as the center,and taking knowledge impartment and value guidance as the goal,we have made improvements in reconstruction of teaching objectives,optimization of course content and design of teaching process,and used the online and offline mixed teaching mode.The students can not only know how and why but also use chemical principles skillfully.