Abstract: Aiming at the problems in experiment teaching process of electronic technology, a series of reforms and explorations have been carried out from the aspects of experimental teaching content, online teaching resources, virtual experiment platform, blending teaching mode and assessment method. Oriented by course ability goal, with the help of modern information technology, modern simulation tools and the existing GWL experiment platform, we form a new “online + offline” blending teaching mode for large-scale electronic technology experiment course in engineering university. From 2020 to 2021, two rounds practice iteration have been completed in the experimental courses of “Electronic Technology” and “Electrical Engineering Fundamentals” for 16 majors, such as manufacturing and automation.