In vacuum induction melting （abbreviated as VIM）， the quality of crucible furnace lining is directly related to the metallurgical quality， production safety and cost. The test was carried out to research from the aspects of lining material selection， manufacturing method and sintering process and so on， and the critical factors and rules affecting the crucible quality were analyzed. The results show that compared with Mgo based material， Al

2

O

3

based furnace lining can reduce cracking and peeling； With using automatic furnace construction instead of manual operation， the furnace lining had higher density and uniformity， and better thermal hardening. Appropriately reducing heating rate to 40 ℃/h-60 ℃/h and extending insulation time during furnace lining sintering achieved uniform temperature distribution， promoted water vapor discharge， and sintering at 1 650 ℃. Then effective process were proposed to improve the service life of VIM lining， and metallurgical quality effect.