Edition: Introduction to the 1st edition of the research series on Tibetan Yi Corridor "Ersu Tibetan Studies" is a collection of essays on Tibetan studies in Ersu. There are 35 articles in the book, which are divided into two parts. The first part is "A Comprehensive Discussion on Tibetans in Southwest Sichuan" (including Ersu Tibetans), and the second part is "Ersu Tibetans". The content in the book spans a long time and covers a wide range. The compiled research results include some historical archives about Ersu Tibetans in the late Qing Dynasty and the Republic of China, as well as social surveys and academic works conducted by ethnic scholars since the founding of New China, some of which are still unpublished archives or internal published investigation materials. It involves the distribution scope, historical origin, culture and art, language, religious belief, marriage and family, customs and archaeology of Ersu Tibetans. ? Summary of the preface to the catalogue Part I: A comprehensive survey of Tibetans in southwest Sichuan (I) A survey report on the social history of Tibetans in Miaoding area of Mianning county and Ai commune (II) A brief report on the investigation of Tibetan tombs and inscriptions in Miaoding area of Mianning county, Wang Zhiliang, Chen Mingfang; Notes on the investigation of Tibetans in Luning district, Mianning county, Liangshan Prefecture; A historical survey of Tibetan society in Yang Guangdian and Xifan; The editorial group of Sichuan Province (II) About the academic work "Yi People's Historical Draft" Discussion on Tibetan in Southwest Sichuan Fang Guoyu A Preliminary Study on Tibetan History in Southwest Sichuan He Yaohua An Overview of Tibetan Scattered in Southwest Sichuan "Xifan" and its origin Long Xijiang on the ethnic origin and ethnic name of Tibetan in Southwest Sichuan Huang Yuebu Part II Ersu Tibetan (1) A comprehensive discussion on the struggle of Yi and Tibetan people in Ganluo area against Zimujia in history. The Taiping Army, an editorial group of Sichuan Province, passed through Xinmin, Baoan and Meiziying in West Sichuan. The situation of Haitang and other places: the origin of Sichuan editorial group's "many-bearded people" and other materials of He Yaohua about Sichuan pine forest toast in Qing Dynasty; Zhang Fuchen's Xifan paddy field; Jiang Mingrong's brief discussion on the historical factors of Liangshan Tibetan "Ersu people" Huang Yuebu's ethnic identity of Sichuan Ersu people; Wu Da's (II) Language; National languages and their genus classification in Liujiang River basin ―― Also on the upper reaches of Jialing River, The Ethnic Language in the Yarlung Zangbo River Basin Sun Hongkai's Language in the Western Sichuan Ethnic Corridor Summary of Sun Hongkai's Ersu Language and Ethnic Identity of Ersu People Liu Huiqiang Wu Da's rare hieroglyphic almanac ―― the original characters of Ersu people Liu Yaohan, Song Zhaolin, Yan Ruxian, The characteristics of Yang Guangcai's Ersu Saba characters and their cognitive value in comparative philology; A study on the morphemes of Wang Yuanlu's Ersu Saba characters; A survey of the verbs in Zheng Feizhou's Ersu language tend to be prefixes and aspect markers; Song Lingli (III) Customs; Two funeral words of Qian Anjing's Ersu Tibetan in Shimian County; Ethnic Wu Da of food culture in the wedding ceremony of Qian Anjing's Ersu Tibetan; Liu Junbo's trilogy on the river. The Ancient Buildings in the Zone ―― Diaoma Wenzhong (IV) Investigation on the Religious Customs of the Tibetan People in Ersu, Southwest Sichuan; A Preliminary Study on Qian Anjing's Nine Ways of Sending the Soul by Bonism among Tibetan People in Mianning; Chen Zongxiang's "Zanke" and "Road Map" in Mianning; Ma Wenzhong's Search for the Tibetan Buddhist Temple in Mianning;;