Experimental study was carried out on the influence of water content upon the gas adsorption characteristics and the initial gas diffusion velocity of gassy coal samples with the gas adsorption constant tester and the initial velocity tester of gas diffusion. The study results showed that there was a linear relationship between the water content and the gas adsorption constant a, the reciprocal of water content correction factor and the initial velocity of gas diffusion, and there was not a fixed relation between the water content and the gas adsorption constant b. The experimental results have a certain theoretical value for further studying the gas adsorption characteristics and the law of gas power after coal disturbance.%利用瓦斯吸附常数测定仪及瓦斯放散初速度测定仪，分别对高瓦斯煤样进行了水分影响甲烷吸附特性及瓦斯放散初速度的实验研究。研究结果表明：水分与吸附常数a、水分校正系数倒数以及瓦斯放散初速度之间呈一次线性关系，而水分与吸附常数b之间则没有固定的关系式。实验结果对于进一步研究煤对甲烷吸附特性，以及煤体扰动后发生瓦斯动力规律具有一定的理论价值。
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