To provide a method for arranging a long building component, which is excellent in maintainability of the long building component, semi-permanently exhibits an anti-termite effect, and physically protects a building from termites without an adverse effect on human bodies and environmental contamination.

The method for arranging the long building material, having anti-termite performance, is characterized in that a termite invading gap and a termite invading passage such as a penetrating prepared hole in a concrete skeleton are blocked with a termite invasion blocking member which is fitted into or onto an inner or outer peripheral surface of the long building material or a sleeve.