Abstract: In order to study the application of the mixed teaching mode of higher vocational courses in the software courses of interior art design under the background of "internet plus", analyze the advantages and disadvantages of the course "CAD Indoor Construction Drawing" by conducting teaching design before, during and after class respectively. Aiming at the characteristics of the "CAD Indoor Construction Drawing” course of higher vocational interior art design majors with many knowledge points and strong practicality, we were based on the online teaching platform to support the organic combination of online autonomous learning and offline teaching classrooms to carry out teaching reforms. Exploring and researching the teaching mode that emphasizes online teaching knowledge points, offline task intensive lecture, student operation and teacher guidance, student team cooperation, etc. The purpose is to improve the teaching quality and effect of the course "CAD Indoor Construction Drawing", to promote students' independent learning, to strengthen the interaction between teachers and students, and to improve students' indoor construction drawing ability and level.

Key words: “Internet plus”, Blended teaching, CAD courses, Practice