It becomes possible to stably deliver an inhaled particulate medicine to a targeted part for administration while reducing burdens on a patient. When supplying the particulate medicine into a body by an airflow, a multi-layer flow composed of a core airflow (A) and a clad airflow (B) outside the core airflow is used as the airflow. The medicine is dispersed in the core airflow (A) and velocity of the clad airflow (B) is set higher than that of the core airflow (A). The medicine dispersed in the core airflow (A) reaches the targeted part for administration while the medicine is protected by the clad airflow (B) without contacting a larynx and the like. A cross-sectional area of the airflow is set smaller than that of the larynx. The airflow is supplied to an upper side of the larynx.
