The thermal and dynamic factors are equally important in influencing sea ice,however,the thermal part in most existing thermodynamic-dynamic sea ice models was only simply considered.The Winton's enthalpy conservation three-layer thermodynamic model has been used in this paper to replace the zero-layer one in the Hibler thermodynamic-dynamic sea ice model,and the 1983 Arctic sea ice has been simulated using the Hibler and the improved Hibler model.Simulations suggest that the simulated sea ice thickness is larger,the seasonal variation of the sea ice thickness is smaller,and the simulated sea ice compactness is in better accordance with the observed in the improved Hibler model.