Measuring the high-quality development of inter-provincial foreign trade can pro-vide a decision-making basis for achieving provincial convergence in the high-quality develop-ment of China's foreign trade.This paper constructs an index system to measure the high-qual-ity development of China's inter-provincial foreign trade from three dimensions:trade scale,trade structure,and trade advantage.Using macro panel data from 30 provinces in China span-ning from 2009 to 2020,it analyzes the temporal and spatial evolution characteristics of the high-quality development of inter-provincial foreign trade.Finally,policy recommendations are pro-vided based on the research findings,aiming to offer insights for enhancing the quality of Chi-na's foreign trade.