The purpose of this study is to analyze the present condition of mobile information and to find the advancement planning of mobile service of public sector information. Through the analysis of present condition of mobile information and past studies, the five development ways are found: Context awareness, Digital native(Multi-channel management), Globalization, Web2.0(User participation), Information management. Also we chose the top priority projects that should be worked in each development way. If the projects are conducted according to development steps(introduction step, maturity step, plateau step), the ubiquitous services can be provided to users.