A community generation support system and a community generation support method. A community generation support device (3) monitors public information stored in a web server (24). The community generation support device (3) detects a potential community on the basis of monitoring of information. The community generation support device (3) requests the web server (24) to generate a community space concerning the detected potential community. The web server (24) generates the community space. The community generation support device (3) transmits information on invitation for asking whether each potential community member wants to participate in the community to the user terminal (20) of the potential community member through the web server (24). The user terminal (20) transmits information on registration of participation to the community generation support device (3) through the web server (24). The user terminal (20) performs processing for making a user participate in the community.
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