Abstract: The volatile matter release during pyrolysis process of coking coals has a significant influence on its coking characteristics and coke structure. Thermogravimetric analysis was used to study the volatile matter release behavior during pyrolysis of eight typical coking coals. A meticulously comprehensive and profound analysis has been rigorously executed on the parameters associated with the evolution quantity of volatile matter, the characteristic parameters of the volatile matter evolution rate, the sub - peak characteristic parameters resultant from the deconvolution of the DTG （Differential Thermogravimetry） curve, and the metamorphic degree parameters within a precisely demarcated temperature regime. In addition, this research has delved deeply into the variances in the pyrolysis activation energy parameters of coking coals at diverse stages of metamorphism, with the aim of elucidating the underlying mechanisms governing the thermal decomposition behaviors of these coals. The results showed that, The amount of volatile matter evolved at specific temperatures and within specific temperature ranges can mirror the stage-by-stage characteristics of volatile matter evolution during the pyrolysis of typical coking coals. There is a remarkable linear correlation （R²>0.8） between the absolute volatile matter evolution amount V_{x ℃} and the metamorphic degree parameter V_daf. On the other hand, the relative volatile matter evolution amount V_{N-x ℃} reflects the differential volatile-matter-evolution behaviors among various coal types. Notably, within specific temperature ranges, the majority of volatile matter evolution amount parameters exhibit a polynomial relationship with the metamorphic degree parameter Vdaf. The temperature characteristic parameters T_onset, T_max, T_end and the volatile matter release rate characteristic parameters DTG_max, v_a, r extracted mainly from the DTG curve exhibited a good linear relationship with the coal rank parameter V_daf, and the correlation R² was above 0.8. Decomposition of the DTG curve into six sub-peaks showed that the peak temperatures and integral areas of sub-peaks 2, 3, and 4 were significantly related to the coal rank. The dominance of sub-peaks 3 and 4 in the integral area indicated that cleavage of the C_al—C_al and C_ar—C_al bonds was the main reason for the formation of rapid release of volatile matter. The apparent activation energy E calculated using the Coasts-Redfern method displayed a polynomial relationship with the coal rank parameter V_daf, but the correlation was poor, indicating that the activation energy was jointly influenced by multiple factors. The relationship between the thermoplastic index and volatile matter release behavior needs to be further studied.