In the process of the investigation,collection and study of Bryophytes from the Dagu Glacier of Heishui County in Sichuan Province,discovered a new geographic distribution records of Andreaea densifolia.This paper describes its morphological characteristics and pictures is taken under the microscope.Description and drawing of the past had been corrected.Enriched our study information on Andreaea densifolia and it has an important significance on the study of diversity of moss flora of China.