In agriculture and forestry universities, designing the curriculum system of engineering majors based on OBE idea can greatly promote talent-cultivating with engineering practice ability and enhance the undergraduate teaching level. The course system of Chemical Engineering Principles for chemical industry of forestry products major was built from the ways of the definition,realization, evaluation and assessment and how to use the evaluation and assessment. It was a beneficial and useful exploration for the construction of curriculum system about chemical engineering specialty in agricultural and forestry universities.