This article problem: 1). What is the form of community struggle to build Pasangkayu into a Regency? 2). How is the social condition of the community after the formation of Pasangkayu district? 3) How is the development of the community after changing the name of North Mamuju to Pasangkayu district? The objectives of this article are: 1). Describe the form of community struggle in building Pasangkayu into a district and 2). Describe the condition of the community after the formation of Pasangkayu district and 3). Describes the development of society after changing the name of North Mamuju district to Pasangkayu. This research method uses historical research methods, namely 1. Heuristics (data collection). 2. Source criticism is divided into two types, namely external and internal criticism. 3. Interpretation (data analysis) of various information that has been obtained from various sources. 4. Historiography is intended to write historical events in the form of scientific works by using language and descriptive explanations. The results showed that the formation of North Mamuju Regency was based on factors of natural resources and the inability of the community to see the services of Mamuju Regional Government which were favoritism in nature. Finally, a movement initiated by the people of Sarudu Village was carried out, so a forum called KAPKP (Action Committee for the Establishment of Pasangkayu District) was formed to fight for these ideals. The climax of the struggle, on July 4, 2002, was declared its division with North Luwu district.