To discuss the complication of common anatomic variant of the middle turbinate-concha bullosa.We present a 63 years old man with nasal obstruction who was diagnosed to be a polyp originated from concha bullosa by CT and operation.Polyp originated from middle meatus was squeezed into concha bullosa.Endoscopic operation is the best treatment to this disesase.Concha bullosa can result in obstruction of middle meatus and then lead to sinusitis.This case,polyp originated from middle meatus was squeezed into concha bullosa,it was a rare occurrence.