[en] The debris flow deposits of Daduo platform was studied using RGD-3B thermoluminescence spec trometer. Single aliquot regenerative dose method was utilized to measure the equivalent dose (E.D.) of the profile samples, the result indicates that with the increasing of depth and burial time, the acceptance of the surrounding environment of U, Th, K radiation dose increased, the overall equivalent dose values rise largely, range of 92.91∼155.38 Gy. It shows that the using of thermoluminescence to date the ancient debris flow deposits samples on the platform technology has some viability. Determine the age range of Daduo platform has a basic significance in dividing the stages of debris flow activity and establishing chronological scale. At the same time TL dating provides the ancient debris flow deposits of the platform which is an event dating environmental record carrier with a new way of thinking and methods. (authors)