Using a GLEEBLE 3500 thermomechanical simulation testing machine, the hot deformation characteristics of 23Cr-8Ni steel were investigated within the temperature range of 1000-1250 ℃ and strain rate range of 0.001-10 s?1. As the strain rate decreased and the deformation temperature increased, the flow stress clearly decreased. The flow stress decreased as a result of the softening process that followed the peak stress. The stress index (n) was 4.28, and the thermal deformation activation energy (Q) was 588878 J/mol. An ideal thermal processing range was reached once the processing map was created. Furthermore, the optimal processing range was calculated to be 0.001-0.1 s-1 and 1000–1200 °C, the yield has been greatly improved. Furthermore, using electron backscatter diffraction (EBSD) and optical microscopy (OM) observations, the microstructure of the characterization region was analyzed to investigate the recrystallization behavior of 23Cr-8Ni steel.