The Central Economic Work Conference at the end of 2018 focused on high-quality development. The conference bulletin clearly stated：“Promoting high-quality development is an inevitable requirement for maintaining the sustainable and healthy development of the economy，an inevitable requirement for adapting to the major contradictions in our society，comprehensively building a well-off society and a socialist modernized country，it is an inevitable requirement for development in accordance with economic laws”. This report systematically evaluated the high-quality development level of the Changjiang Middle Reaches Megalopolis by measuring the differences and structure of high-quality development in the provinces，which will help We deeply grasped the implementation and development pattern of high-quality development of the Changjiang Middle Reaches Megalopolis.