This 2019 report is based on the content analysis of 153 mayors’ speeches delivered by the national urban alliance of the United States from January to April 2019，including cities with different population sizes and geographical regions. Based on the study of economic development，infrastructure，health and human services，energy and environment，budget and management，housing，public security，demography，education，government data and technology，the report analyzes the urban development status of the United States，describes the latest trends of urban development，and focuses on urban development in different regions and scales，and points out the beginning of economic development Finally，it is the most important topic of urban dynamics. Health and public services，infrastructure are important factors of urban development dynamics. At the same time，urban development leads the country and develops with innovative ideas.