Abstract: Analyzing transaction efficiency of Chengdu-Chongqing economic zone based on the “dual circulation” perspective is significant to promoting the high-quality development of regional economy. An evaluation index system of transaction efficiency is constructed from the perspective of internal circulation, and the transaction efficiency of 31 provinces (cities, autonomous regions) and the internal transaction efficiency of Chengdu-Chongqing economic zone are measured by using the global principal component analysis method. The results show that the transaction efficiency is composed of three dimensions: governance level of market economy, transportation and communication level and education level. It presents a spatial framework of “high in the east and low in the west, middle in the middle area”. The transaction efficiency of Sichuan province ranks seventh and Chongqing ranks seventeenth. Further research shows that the comprehensive scores of transaction efficiency of three major districts in Chongqing and 15 cities in Sichuan province show a steady growth trend from 2012 to 2020, among which the transaction efficiency of downtown Chongqing and Chengdu are in top two. From the perspective of external circulation, the gravity model is used to measure the transaction efficiency between Chengdu-Chongqing region and trade cooperation countries and regions. The results show that Chengdu-Chongqing region has close ties with the United States, the European Union, Australia, ASEAN and other countries, and the transaction efficiency score is high. Based on this, suggestions on strengthening the overall “hard power” of the region, enhancing the “soft power” of coordinated development, and steadily improving the “four-ring” trade circle are put forward.

Key words: transaction efficiency, Chengdu-Chongqing economic zone, global principal component analysis method, gravity model