An endotracheal intubation assistance apparatus is for assisting in insertion of an endotracheal tube into the trachea of a patient, and includes a flexible movable tubular stylet, a graspable controller, and a viewing device. The stylet has a leading section, a body section, a tail section, and two slits extending through the body section and the tail section for dividing the tail section into first and second driven sheets. The viewing device includes an elongate body and a viewing head. The elongate body and the viewing head are movable through the controller, and is extendable outwardly from the leading section. When the first and second driven sheets move relative to each other, the leading section swings synchronously a distal end of the endotracheal tube and the viewing head.
