To obtain an incense stick, capable of efficiently diffusing an antimicrobial agent to every corner of a room, and being controlled in release timing, quantity and the like.

This incense stick 1 contains an antimicrobial agent, e.g. hinokitiol, which is forcibly evaporated by heat of the stick 1 and diffused in a room by the convention of air, generated also by heat of the stick 1.