Among many types of current leads used for Tokamak nuclear fusion applications,vapor-cooled current leads are often chosen because of their reliability and wide commercially availability in the current range 100 A-100 kA.However,a vapor-cooled current lead can be a large heat load on the system cryogenics.To overcome this challenge,this paper presents a conceptual design to significantly reduce heat input to a cryostat of a 5 kA vapor-cooled HTS-copper current lead which is immersed in a bath of liquid helium at 4.2 K.Technically,it is composed by two sections-HTS section and copper extension section.This paper principally concentrates to electromagnetic,thermal and mechanical characteristic of the former section one by applying the 3D FEA simulation.