呼吸道异物好发于 3岁以下儿童 ,且以花生米、葵花子、西瓜子等碎小植物性异物多见。以往理论认为支气管异物好发右侧 ,甚至右侧多于左侧 1～ 2倍。近年来许多学者对异物好发部位提出左侧多于右侧的新见解〔1〕,但是例数较少缺乏说服力〔2〕。本文对 1998年 1月～ 2 0 0 1年 2 Respiratory foreign bodies occur in children under 3 years of age, and to peanuts, sunflower seeds, watermelon seeds and other small pieces of plant foreign body more common. Past theory that bronchial foreign body right hair better, or even more than the left 1 to 2 times. In recent years, many scholars have proposed more new ideas on the left side than the right side [1], but the number of cases less convincing [2]. This article from January 1998 to 2001 years 2