The distribution,composition and yield of pyrolysis products of coal water slurry have an important influence on the effective combustion of coal-water slurry,while H₂,CH₄,CO and other gases produced by pyrolysis of coal-water slurry are conducive to improve the denitration temperature window and the denitration efficiency. In this paper,the coal-water slurry made from Shenmu coal(bituminous coal）was pyrolyzed by a high-frequency heating furnace,and the yield and composition of pyrolysis gas were measured and analyzed. The effects of pyrolysis temperature and heating rate on the pyrolysis characteristics of coal-water slurry were explored. The results show that as the temperature increases,the weight loss rate without water of coal-water slurry continues to increase,increasing by about 10% from 700 ℃ to 1 200 ℃. The yield of volatile matter and pyrolysis gas continue to increase,from 0.50 L/g to 0.73 L/g,which shows that the degree of pyrolysis of coal-water slurry gradually increases. The pyrolysis gas is mainly composed of H₂,CO,CH₄ and CO₂. As the temperature rises,the total volume concentration of H₂,CH₄,CO₂ and CO in the total pyrolysis gas decreases in the range of 700-900 ℃,and remains stable in the range of 900-1 100 ℃,and then continues to decline above 1 100 ℃,from initially 90% at 700 ℃ to 78% at 1 200 ℃,in which the volume concentration of H₂,CO₂ and CH4 decrease in a stepwise manner,while the volume concentration of CO remains almost unchanged. The volume concentration of H₂ decreases most significantly,about 6.1%,while CH4 decreases by about 4% and CO₂ decreases by about 2.6%. As the temperature increases,the yields of H₂,CO₂ and CH₄ increase first and then decrease,and the peak appears at about 1 100 ℃,while the CO yield continues to increase. The yield of volatiles is affected by the rate of temperature increase. The weight loss rate without water at 667 ℃/min is 6% higher than that at 400 ℃/min. On the whole,the heating rate has not significantly influence on the pyrolysis. The research results provide a reference for understanding the formation characteristics of primary pyrolysis products of coal water slurry.