The foreign bodies in the food passage and air way are very important in the otolaryngology field, and practically there are many reports of them. Also the kinds of these foreign bodies are variable and almost all things around us are likely to be foreign bodies by momentary mistake. According to kinds and locations, clinicians often make mistakes in diagnosis with other physical examinations except endoscopy, so foreign body was impacted for a long time and some times it may bring a grave outcome to the patient. The authors have recently experienced, in a 13-years old boy, a pink-colored pencil cap in the right main bronchus which was very similar to the color and shape of the bronchial lumen, and so we had difficulty in removal of it. This is the report of clinical findings on this case along with literature review.