Abstract: Qiang customary law represents an important cultural heritage preserved within traditional villages. During the period of emergency management and post-disaster reconstruction following the '5.12' earthquake, various laws and policies issued by the state facilitated the rapid progress and implementation of reconstruction efforts. However, some prominent issues emerged in the interaction with local areas. Through the reexploration of the contemporary value of customary law in the 'post-reconstruction' period, it is discovered that it holds positive significance in the protection of the natural habitat, village spatial layout, and cultural environment of traditional Qiang villages. On this foundation, the study further explores effective pathways for the coordinated integration of formal national law and informal customary law. These include formalizing informal regulations, inheriting or reconstructing customary law, and advocating for a multi-participant mode of law enforcement subjects. This research will provide new insights for the construction, industrial development, and cultural enhancement of traditional villages and communities in Qiang areas during the 'post-reconstruction' period. It also offers a referential basis for promoting rural revitalization and enhancing the stable development of post-disaster settlements.