To investigate hot working properties and control microstructure of the extruded novel nickel-based superalloy FGH4113A, the thermal deformation behavior and microstructure characteristics were studied using Gleeble thermal compressing machine, Optital Microscope, Scanning Electron Microscope and Electron Back Scattered Diffraction. Hot deformation is carried out within the temperature range of 1050 ~ 1150℃ and strain rate range of 0.001~ 0.1s-1. The results indicate that the grain size of hot extruded FGH4113A superalloy coarsens during soaking at 1150℃. Deformation temperature and strain rate have a significant impact on the deformation flow stress and microstructure evolution. It is recommended to undergo thermal deformation in temperature and strain rate ranges of 1080~1100 ℃ and 0.001~0.01s-1 with the γ+γ' microduplex microstructure. After deformation within this range, grains are fully recrystallized and size distribution is uniform, with average size controlled within 5 μm.The residual dislocation density within grain is small,and the misorientation differences is not significant. Recrystallized grain and deformed original grain can be distinguished from multiple dimensions such as LAM, GOS, and IPF.