The course content and teaching method of conventional electronic circuit courses can no longer meet the rapid development requirement of the contemporary electronic information technology industry. In 2018, a fundamental discipline course “Circuit Analysis and Electronics” merging two previous courses of “Fundamentals of Electric Circuits” and “Fundamentals of Analog Circuits” was launched in University of Electronic Science and Technology of China which carries reforms in the course contents and teaching methods. This work introduces the progress of teaching reforms and practices of this new course, and evaluates the teaching effect by analyzing the statistical data of student grade from 2018 to 2022. The analysis results show that good and stable teaching effect has been obtained after 5-year course construction, though the credit hours of this new course is significantly reduced compared to the total of previous two.