A image reading device includes a reading section configured to read an image of a medium transported in a transport direction; a light transmitting member arranged between a transport path on which the medium is transported and the reading section; and an airflow generation section which is arranged on an opposite side of the light transmitting member from the reading section, which includes a hole section positioned facing the light transmitting member, and which is configured to generate airflow from the hole section toward the light transmitting member.