Abstract: In the comprehensive treatment ecological demonstration area of Huajiang Karst plateau in Guizhou province, by collecting samples of bryophytes, identifying the major bryophytes species, checking the water retention ability in bryophytes, analyzing the chemical properties of soil formation in rock contact surface. The results showed that: The bryophytes in experimental area consisted of 11 families, 26 genera, 65 species, were dominated by mosses. Water content of natural bryophytes was ranged from 36 % to 898 %. The water holdup of fresh bryophytes was between 2123% and 5159%. The soil in bryophytes and rock contact surface was in the first standard of the soil nutrients classification. The indicators of soil nutrient were much higher than the blank sample. The results indicate that bryophytes are strongly adaptable to the Karst area. Its an ideal choice to use bryophytes to restore vegetation to the stony desertification area.