Abstract: Based on the two basic dimensions of common prosperity,namely common degree and prosperity degree, the evaluation index system of common prosperity in Sichuan Province was constructed. The methods of entropy weight-Topsis model, variation coefficient method and coupling coordinated model were used to measure the development level of common prosperity of 21 cities and prefectures from 2012 to 2021, and the characteristics of its spatial-temporal evolution and the coordinated development level of two basic dimensions of common prosperity were analyzed. The results showed that from 2012 to 2021, the development level of common prosperity in Sichuan Province showed a steady upward trend, but the development level of common prosperity was quite different in different regions, showing the spatial characteristics of “high in the middle and low in the surrounding areas”. Both the common degree index and prosperity degree index of the 21 cities and prefectures in Sichuan Province showed a positive growth trend, and the growth rate of the prosperity degree index was higher than that of the common degree index, but there was a significant difference between the common degree and prosperity degree. The coupling coordinated development trend of the two dimensions of common prosperity in Sichuan Province had changed significantly, and the coupling coordination degree showed a stable growth trend, and the coordination level had also moved from a moderate imbalance level to a good coordination level.

Key words: common prosperity, common degree, prosperity degree, spatio-temporal evolution, Sichuan Province