Although the endotracheal intubation using laryngoscope can usually be performed under general anesthesia, it may be very difficult in situations such as head and neck trauma, hemorrage, or deformity. Recently we performed antegrade fiberoptic nasotracheal intubation with a guide wire. A 15-month aged female child with mandibular fracture was scheduled for open reduction and internal fixation under general anesthesia. She was anticipated difficult intubation due to displacement of the fracture site. After induction of anesthesia, we passed an adult fiberoptic bronchoscope (O.D. 3.8 mm, LF-2, Olympus optical co, Japan) to vocal cord via right nostril. Then a guidewire was inserted through the suction port of bronchoscope, and bronchoscope was removed in a state of guidewire in situ. We slid the endotracheal tube over guidewire according to Seldinger's technique. We think that nasotracheal intubation using an adult fiberoptic bronchoscope and a guidewire is good for children under 2 years old who are expected the difficult intubation.