Based on the data of 30 provinces and cities in China from 2012 to 2021, the integration efficiency of advanced manufacturing and producer services in 30 provinces and cities in China was measured from static and dynamic perspectives, and the factors influencing the integration efficiency were explored with the help of Tobit model. The results show that the overall level of integration efficiency of advanced manufacturing and producer services in China has been increasing over time, featuring a gradient distribution in space with a higher level in the eastern region compared with the central and western regions. There is asymmetry in the integration efficiency between advanced manufacturing and producer services. Based on the decomposition of GML index, it can be seen that the technological progress restricts the improvement of the supporting efficiency of the producer services to the advanced manufacturing industry, while the technological efficiency also hinders the advanced manufacturing industry from further improving the efficiency of promoting producer services. Digital technology, labor quality, and market competition all contribute significantly to the integration efficiency of advanced manufacturing and producer services.