In order to identify the species of bryophytes in Sygara Mountain in Tibet, 2390 samples in the area were collected, identified and analyzed. The results show that bryophytes of Sygara Mountain have 26 families, 70 genera and 134 species; among them, 25 families, 69 genera and 133 species are mosses, and only one is liverwort, namely Conocephalum conicum (L.) Dum. 4 dominant families are in the descending order of Bryaceae, Dicranaceae, Pottiaceae, Polytrichaceae respectively, and the dominant genera are Hypnum, Brachythecium, Plagiomnium, Racomitrium and Dicranodontium.