The forging test of H13 hot die steel specimen was carried out with different initial forging temperatures，final forging temperatures and forging ratios, and the test and comparative analysis of thermal fatigue performance and high temperature wear resistance performance were conducted. Then, the influences of forging process parameters on the properties of H13 hot die steel were studied. The results show that when the initial forging temperature increases from 1050 ℃ to 1150 ℃ and the final forging temperature increases from 825 ℃ to 925 ℃，the thermal fatigue level and the high temperature wear volume of H13 hot die steel first decrease and then increase，and its thermal fatigue and high temperature wear resistance performances first get better and then get worse. Furthermore, when the forging ratio increases from 3 to 7，the thermal fatigue level and the high temperature wear volume of H13 hot die steel first decrease and then remain constant，and its thermal fatigue and high temperature wear resistance performances first get better and then remain constant. Finally, the initial forging temperature，final forging temperature and forging ratio of H13 hot die steel are preferably 1125 ℃, 900 ℃ and 5，respectively. However, compared with the initial forging temperature of 1050 ℃，the value of thermal fatigue level for specimen at 1125 ℃ is reduced by four grades, and the high temperature wear volume is reduced by 16×10-3 mm3. Compared with the final forging temperature of 825 ℃，the value of thermal fatigue level for specimen at 900 ℃ is reduced by six grades, and the high temperature wear volume is reduced by 20×10-3 mm3. Compared with the forging ratio of 3，the value of thermal fatigue level for specimen at forging ratio of 5 is reduced by two grades, and the high temperature wear volume is decreased by 6×10-3 mm3.