From 1 to 28 Aug.2008,the Joint field team,consisting of the Palace Museum,the Academy of Fine Arts of Capital Normal University and the research staff from Lu Tusi Official Museum of Yongdeng County,Gansu Province,made an investigation to the monasteries attributed to Lu Tusi,viz.Miaoyin Buddhist Monastery,Xianjiao Buddhist Monastery,Gan’en Buddhist Monastery and Leitan Taoist Temple by comprehensive collection and compilation of the existing image materials.The cultural heritages of the wall paintings and sculptures of Ming and Qing Dynasty are rich in regional styles with the fantastic artistic skills and techniques, and reflect the Sino-Tibetan cultural harmony and coexistence.They are not only the first-hand materials to do research in the art history of Ming and Qing Dynasties and the religious history of Ming and Qing Dynasties,also the direct evidence to Sino-Tibetan cultural communication of that period.Therefore,the historical documents are of the higher research value both in the fields of Buddhism and art history.