PURPOSE: To produce a stress cone for power cable having good electric characteristics, high workability and prolonged service life.

CONSTITUTION: The stress cone 16 comprises an insulating part 17 having a through-hole 19 for inserting a power cable 2 and an outer tapered part 20, and a semiconductive part 18 formed integrally with the insulating part 17. Fluororesin is then applied on the tapered part 20 and the through-hole 19 to form a fluororesin film 22. Since the fluororesin is applied while rotating the stress cone, the fluororesin intrudes even into the joint 24 of the insulating part 17 and the semiconductive part 18 thus forming the through-hole smoothly. Consequently, breakdown voltage increases, cable insertion work is simplified, and the stress cone follows up thermal expansion.