Abstract: 3D model of cold crucible induction melter (CCIM) for vitrification was built by finite element analysis software ANSYS. The effects of CCIM bottom structure and distance between crucible bottom and induction coil on the distribution of electromagnetic field in CCIM were studied. The results show that the magnetic flux density, current density and Joule heat density reach maximum value at the middle region of the glass melt surface and reach minimum value at the center and crucible bottom of the glass melt. The crucible bottom has significant shielding effect on the electromagnetic field. Sectioning the crucible bottom can improve the electromagnetic field penetrability. The Joule heat generated in the glass increases by 12.7% when the crucible bottom is sectioned into 3 parts. The CCIM has a relative high heating efficiency when the distance between the crucible bottom and the induction coil is 10-15 cm.