Since the Internet and electronic commerce emerging from 1990s, the countries worldwide have been designing and implementing information and communication technologies in their public sectors. The core idea of electronic government is to provide more effective and efficient value-added public services, and even to facilitate process improvement and re-engineering. This article introduces three international studies of information and e-government indicators and analyzes them in details based on the perspective policy evaluation. Also explored is performance of various countries according to these indicators. as well as their e-government measures. The results will benefit the sustainable management for the e-government policy in Taiwan.