Abstract: The thermogravimetric data of coal water slurry at various heating rates were analyzed by using the FG-DVC model in the temperature range of volatile matter release.Judging from the results，apparent activation energy decreased when heating rate increased and DTG peak value was on the contrary.The simulated results were very similar to the experimental data and the case n=1 was the best fit.So FG-DVC model is suitable for describing the process of volatile matter release from coal water slurry.