From the Chinese civil War to the Cold War, Matsu Islands had become a combat zone where the global Communists and Capitalists political ideologies met and encountered. The maintaince of military rediness fundamentally transform the general human subsistence in these rock islands. Before 1940s, the environment was contained and comprehended by the local practices of popular religion. Since the war affected the islands, the shortage of soil and water of islands limited the ways military and the administrative politics processes to their policy objective. As a result, the environmentality on the islands has became a constant war between environment and intentional administration and ritual practices. This thesis elaborates the dialectic characters of politics and religious practices on the Chuguang Islands of Matsu since the late 19th. The material condition substantiates the social unit “household” as both state citizen and ritual subject by the governmental technology of ecology and the domestic and inter-household rituals.