Objective]The aim of the study was to explore the variations of absolute humidity in Guizhou Province.[Method]Based on the weather observation data from 1960 to 2013,the temporal and spatial variations of absolute humidity and its relationship with precipitation in Guizhou province were analyzed using the method of absolute humidity calculation.[Results]The absolute humidity declined in Guizhou province over the period. Absolute humidity was maximum in summer,followed by spring and autumn, and was minimal in winter. Absolute humidity in the east and south parts of study area were higher than the west part. Absolute humidity was higher in basin,hill,low and moderate mountains than in the plateau. There were differences in each landform for absolute humidity among different seasons. Absolute humidity fluctuated with the increase of slope but declined with the increase of elevation. A positive correlation between absolute humidity and precipitation was found. There were consistencies in spatial pattern,proportion of season and topography between absolute humidity and precipitation.[Conclusion]Spatial and temporal variations of precipitation are dominant factors affecting variation of absolute humidity in Guizhou province.%【目的】探究我国贵州省绝对湿度变化规律。【方法】基于贵州省1960-2013年气象观测资料，运用绝对湿度计算方法，分析了贵州省绝对湿度时空变化特征及其与降水量之间关系。【结果】结果表明：全省绝对湿度呈下降趋势。夏季绝对湿度最大，其次为春季和秋季，冬季最小。绝对湿度空间格局呈东部和南部较高，西部较低。盆（坝）地、丘陵、低山、中山绝对湿度大于高原地区，且各地貌区之间不同季节绝对湿度存在差异。随坡度增加，绝对湿度呈波动起伏特点，随着高程增加，绝对湿度呈下降趋势。降水量与绝对湿度存在正相关关系，且两者在空间格局、季节比例、地形地貌上均较为一致。【结论】降水量时空变化特点是影响贵州省绝对湿度变化的主要因素。
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