Abstract:There are three mega-trends that are marking our modern society, including globalization, informatization and urbanization. Sustainable urbanization has been becoming one of concerned issues all over the world because of half amount of people living in cities who consume 75% energy in the world. How to coordinate informatization and urbanization and promote urbanization level by information technology are discussed in this paper which includes three parts. First, content and key elements of sustainable urbanization are talked over. Then, sustainable urbanization development improved by information technology is researched in the field of low carbon emission, rational distribution cities, and public service improvement. At last, we explore the relationship between informatization and urbanization, resilience management of urban ecological system, public service and smart city in the situation of coordinated development between informatization and urbanization.