Abstract: The hot deformation behavior of Fe-Mn-C twinning induced plasticity (TWIP) steel was investigated by hot compression tests in the temperature range of 800~1000°C and strain rate range of 0.01~10 s^-1. Experimental results showed that increasing the temperature and decreasing strain rate promote the occurrence of dynamic recrystallization of austenite. According to the experimental flow stress curves, the hot working equation is obtained and the activation energy for plastic deformation is Q=421.37 kJ/mol. The occurrence of dynamic recrystallization can be estimated by using a Zener-Hollomon type equation and metallographic examination. Dynamic recrystallization is prone to occur when Z&le9.94×10¹⁸. The better hot deformation properties will be obtained under this condition.