At present, China's economic development is shifting from the stage of high-speed growth to the stage of high-quality growth. It is important for different regions to accurately measure the level of high-quality development and discover shortcomings and deficiencies in the development process. By constructing a high-quality development index system and using the entropy value method, the high-quality development level of 30 provinces of China is measured from 2016 to 2020. The following conclusions can be drawn: China's overall high-quality development level is low and there is plenty of room for improvement; the high-quality development level of China has steadily increased from 2016 to 2020, and there is variability in the high-quality development level among different regions, with the eastern region high quality development level is better, and the western region performs worse.