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A pyrolysis study of furniture plant waste dusts is carried out under nitrogen flow rate of 10 ml/min. and heating rate of 10 ºC/min. at between 25-900 ºC in a TGA equipment. As a result of the pyrolysis of waste dusts, three region were determined on thermographs. Regression constants for the different theorical model equations that representing degradation were calculated by Coast-Redfern method. And according to regression coefficients, kinetic model which the best representing degradation, was determined. In the study, the kinetic parameters were determined for the second and third decomposition steps, separately. Best model equations representing degradation for total reaction, second degradation step that hemicellulose and cellulose degraded, third degradation step that lignin degraded was found to be chemical kinetic F(3) equation, Ginstling-Brounshtein (D4) and Jander (D3) equations and chemical kinetic F(3) equation, respectively. By using best model equations representing degradation, activation energies and ln (A/min-1) were determined to be 77.54-82.32 kJ/mol and 10.45-11.60, respectively for second degradation step that hemicellulose and cellulose degraded and 52.40 kJ/mol and 5.07 same respectively for third degradation step that lignin degraded. Kinetic parameters were found to be 54.89 kJ/mol, 9.33 for the total reaction. [ABSTRACT FROM AUTHOR]