Abstract: The outer circle of ZCuAl8Mn14Fe3Ni2 alloy is cracked during the forging process. The causes of the cracking are analyzed from both the material and forging process by observing the macrostructure and microstructure of the cracked position. The results show that the inappropriate forging process results in the inconsistency of the plastic deformation of the core and outer circle, and that the defects are unhealed effectively, which can cause the material to crack during the forging process. By optimizing the forging process, the ring blank of Φ920 mm×Φ440 mm×110 mm is successfully forged.