Information technology has empowered education, and online and offline teaching has become a new teaching mode in the
new era, but there are problems such as teachers' decreasing control over students, uneven teaching quality, unsound teaching quality management system, and imperfect teaching evaluation system. Take Instrumentation Analysis for example, we apply the PDCA cycle to carry out the reform of online and offline integrated teaching, improve the quality of online and offline integrated teaching, perfect the teaching quality management system, and build a complete online and offline integrated teaching monitoring and evaluation mechanism.
