Digital circuit experiment is a fundamental experimental course in science and engineering colleges. Existing teaching methods of experimental box are not flexible enough in time and space, and virtual simulation experiment cannot restore the real experiment operation, both of which can not meet the needs of students’ course learning. In response to the above problems, a remote online experimental teaching platform based on actual hardware circuits has been built. By using the internet, students can operate real hardware circuit experiments at any place and any time. Multi-level and multi-type experimental teaching content and online digital teaching resources are designed to construct an experimental teaching system for remote digital circuit courses. The online experimental teaching achieves substantial equivalence with offline experimental teaching in the experimental design, operation methods, testing steps and other aspects, improving the effectiveness of experimental teaching.