In recent years, the growing use of information and communication technology (ICT) is expected in citizens‟ groups (NPOs, voluntary organizations). But the usage of the tools that can promote online communications in citizens‟ groups has not been widely accepted, in comparison with enterprises or educational institutions. In this paper, we aim to clarify the current utilization of online communication tools, and discuss how to promote online communication among members of citizens‟ group. Firstly, we analyzed some important factors of why these tools are not widely used. These include that existing tools have many unnecessary functions, and there is a lack of opportunities to obtain the necessary skills to use the tools. Then based on the analysis results, we proposed some solutions to promote the use of online communication tools for citizens‟ groups. The first one is to provide educational courses for citizens‟ groups, which was verified through a trial experiment we conducted. The second is to develop an easy to use community environment named “e-Citizen square” to provide functions for citizens‟ group to easily construct and manage simple Web community sites. The community environment we developed was based on open source contents management systems.