Due to great changes in the application environment of the Internet,current Internet architecture,with “end-to-end transparency” as its principle,is facing challenges such as security,scalability,and Quality of Service (QoS). This paper introduces the design principles and concepts,evolutionary strategies and research status of future Internet architecture. It also analyzes problems and challenges in the process of its standardization,and discusses three evolutionary routes:reformative,integrated,and revolutionary. Due to great changes in the application environment of the Internet, current Internet architecture, with “end-to-end transparency” as its principle, is facing challenges such as security, scalability, and Quality of Service (QoS). This paper introduces the design principles and concepts, evolutionary strategies and research in the process of its standardization, and discusses three evolutionary routes: reformative, integrated, and revolutionary.