In this study, we develop a novel analysis framework for evaluating the effects of resource reallocation from the correction of factor market distortion (FMD) on total factor productivity (TFP) gains. We first measure FMD in China's heavy industry sector from 1995 to 2012, and then investigate the effects of resource reallocation from FMD correction by using the price elasticity of factor demands as a link, along with its potential TFP gains. The results indicate that: (1) Taking the price of capital as a reference, the prices of labour and energy in the study period were relatively higher to different extents. (2) If current FMD were fully corrected, the labour input in China's heavy industry sector would increase by 25.37%, whereas capital and energy inputs would decrease by 18.51% and 10.57%, respectively. (3) The resource reallocation effects resulting from current FMD correction will bring about significant TFP improvement (by 8.55%) in China's heavy industry sector, and there are evident industrial differences and stage characteristics for these promoting effects. •We measure the factor market distortions (FMD) of China's heavy industry sector.•The effects of resource reallocation from a full correction of FMD are evaluated.•TFP gains from resource reallocation with the correction of FMD are investigated.•Significant productivity improvements from the FMD correction can be achieved.•This promoting effect has evident industrial differences and stage characteristics.