對於人口稀少、資源不足與發聲權力偏低的原住民社會運動，網路提供非主流的另類媒體平臺，蘊藏著凝聚部落共識、擴大動員網絡、聚集社會資本的潛能。本文針對蘭嶼反核廢運動為主，探索網路對原住民社會運動之動員與社會資本形構的影響。研究發現，傳統蘭嶼反核廢運動透過教會與家族網絡進行動員，網絡同質性高，具有較強的行動規範。新世代的達悟青年則透過網路擴大動員的人際網絡，但由於異質性較高，建立長期而穩定的行動規範則是未來重要的挑戰。

Drawing on new communication technology as the potential empowerment for aboriginal social movement, the article explores how Tao anti-nuclear campaign used the Internet to increase its power to resist the dominate ideologies. Social capital is the key concept and divides to three factors, including social network, norm, and resource. For understanding the Internet in Orchid Island, we used participant observations and in-depth interviews as research method. The study found that the old generation of Tao anti-nuclear campaign used the traditional interpersonal networks, including religion systems and families, to mobilize. And the young generation used the Internet as the tool to overcome material distance, so they could expand social networks through posting information on Facebook to invite participants who all cared about the anti-nuclear issue but came from difference places. Therefore, the Internet became a new platform that has potential to aggregate people for social movement. But because the heterogeneity of the social network, they lack the commitment and need more norms to maintain and support the aboriginal social movement.