China"s economic growth relies on the double-wheel drive of labor and capital. This paper uses the method of regression by region and time period to divide labor into low-skilled labor and high-skilled labor, and capital into conventional capital and R D capital. By using industry-level data of different regions, this paper studies the switching of China"s economic growth power and draws the following conclusions: Firstly, the overall driving force of China"s economic growth goes through three stages: low-skilled labor + conventional capital, high-skilled labor + conventional capital, and high-skilled labor + R D capital, Secondly, the eastern and northern coastal regions are in the high-skilled labor + R D capital driving state, the southern coastal regions, the middle reaches of the Yangtze River, the middle reaches of the Yellow River, the southwest and northeast regions are in the high-skilled labor + conventional capital driving state, while the northwest region is still in the low-skilled labor + conventional capital driving state, Thirdly, the driving force of China"s economic growth varies in different periods of time. From 2001 to 2005 and 2006 to 2010, it was mainly driven by low-skilled labor and conventional capital; from 2011 to 2015, it was mostly driven by high-skilled labor and conventional capital; from 2016 to 2022, it was driven by high-skilled labor and R D capital in the eastern and northern coastal areas. Fourthly, there is a threshold effect in the switch of driving forces of China"s economic growth. There is a "double threshold" for R D capital investment, while high-skilled labor sets a single "high threshold" for R D capital investment. Accordingly, this paper puts forward relevant countermeasures and suggestions for power conversion in different regions.