毛兰姆法会是冬季盛大甘南法会其中一个节日，是藏传佛教的格鲁派为宗喀巴大师创建格鲁派而举行的一场盛大法会，时间是每年农历正月初四至十七日举行，除了拉卜楞寺、郎木寺、格尔登寺举行了比较大型的瞻佛（晒大佛）活动外，期间甘南藏区的格鲁派寺院都进行盛大法会和庆祝活动。
The mauram law will be one of the festivals of the grand Gannan law society in winter. It is a grand law meeting held by the gurus of Tibetan Buddhism for the creation of the guru sect of Zong khaba. The time is held every year from the beginning of the lunar month to seventeen, and the larger Buddha (the Buddha) was held in addition to the La Bu Leng temple, the Lang Mu temple, and the Glen temple. During the period of activities, there were grand Law Societies and celebrations in the Gannan Tibetan area.