明治38年（1905）起，臺東廳將原屬總務課管轄的原住民業務轉交給警務課，從此警察的力量深入了部落內。明治40年（1907），日人在各部落建立「蕃社役場」，此一制度雖然給予各社頭目管理社內事務的權力，但實質上「蕃社役場」為當地警察派出所控制，成為貫徹政府意志的工具。清代以來的阿美族內部社會控制的機制已被國家所替代。 明治43年（1910）展開之土地調查，不僅在空間上確定了各社的空間範圍，而且土地整理之後，將原屬各社所有的共業土地分割，確定阿美族部落內的土地私有制度。並且透過地租制度，將傳統部落內透過土地所產生之個人與頭目的關係，轉變為個人與國家的關係，無論個人或部落均成為國家直接控制的對象。 在國家行政體系與警察官吏的力量逐漸下移之際，基於管理的需要，行政疆域的界線逐漸取代了過去各部落間模糊的狩獵或耕作界線，部落間的調整合併，使得清代以來經由部落分布所形成的空間觀念逐漸改觀，使得行政管理的空間區域取代了部落的空間範圍。

From 1905, the aboriginal affairs of the Taitung Tin (臺東廳) were transferred from general services division (總務課) to the police division (警察課). Therefore the police-officers influence penetrated into the tribes. In 1907, the tribal yichang (蕃社役場) was established by Japanese. Thought the chief of the tribe (頭目) might manage the tribal affairs, but in fact the tribal yichang (蕃社役場) was still controlled by the police-officers and became the tool that the Japanese government might carry out his volitions. From Ching dynasty, the Amis inner part of social control mechanism was replaced by the administrative system of government. The results of the land survey (土地調查) in Taitung Tin (臺東廳) were not only to confirm the spatial scope of every tribe but also ratify the private ownership of every individual's land owner through cutting apart the tribal general lands. By the way of land taxes, the traditional relationship was transferred from individual and the chief of the tribe to the individual and the nation. No matter individual or tribes, they were became the targets under the domination by the government.