A sound agricultural socialized service system is an important guarantee for the development of agricultural modernization,and agricultural modernization is the goal of the development of agricultural socialized services,and the two are integrated and developed together.Taking Guangxi as the research object,the entropy value method and the obstacle degree model are used to measure the development level of agricultural socialized services and agricultural modernization from 2013 to 2021,and analyze the main factors restricting their development,and at the same time,the coupling coordination degree model is used to measure the coupling coordination degree of the two developments.The results show that the development level of agricultural socialized services and agricultural modernization in Guangxi both show a rising trend year by year;the main factors restricting the development of agricultural socialized services are scientific and technological services and financial services,and at this stage,in the order of the degree of obstacles to agricultural modernization subsystems,the level of agricultural input＞the level of sustainable development＞the level of economic development＞the level of agricultural output＞the level of scientific and technological support;the degree of coupling between agricultural socialized services and agricultural modernization is rising,and the degree of coupling coordination from dysfunction is measured.The degree of coordination has been rising,developing from disorder to quality coordination,but the development level of agricultural socialized services still lags behind agricultural modernization.Accordingly,we put forward suggestions for promoting the high-quality development of agricultural socialization services and agricultural modernization from three aspects:improving agricultural socialization services,strengthening agricultural modernization and innovating coordination and development mechanisms.