In the eastern HimalayasEastern Himalayas of YunnanYunnan Province, ChinaChina, local TibetansTibetan have long established traditional irrigation practices based on their agro-pastoral livelihoodLivelihood. Currently, these traditional irrigation methods, along with associated customary lawsCustomary law and traditional knowledgeTraditional knowledge, are threatened by climate changeClimate change. The effective management of water resourcesWater resources has become increasingly challenging, posing risks to many livelihoodsLivelihood. Concurrently, as most men leave for work, agriculture is becoming increasingly feminized, with womenWomen emerging as the primary workforce. Compared to men, womenWomen face greater risks from climate changeClimate change in agricultural contexts, while traditional irrigation methods and decision-making processes remain male-dominated, leading to gender conflicts and contradictions. To address these issues, a community-based irrigation management committee was established, building upon the traditional women’sWomen organization known as “sisterhood.” This committee has discussed, formulated, and implemented new irrigation rules and regulations, allowing womenWomen to actively participate in the decision-making process of irrigation management. This article examines gender-based irrigation managementGender-based irrigation management in TibetanTibetan villages in DeqinDeqin and analyzes how this model, by promoting gender mainstreamingGender mainstream, can effectively adapt to climate changeClimate change.