在新编高中物理下册第335页“探测放射线的方法”中,介绍了“J2553威尔逊云雾室”法。由于云室法能够形象、直观地显示出放射线的径迹,所以学生兴趣很高.本文介绍一种笔者用自制的简易云室和荧光粉(放射源)来演示放射线径迹的实验,经笔者多次课堂进行实验演示效果明显,其成功率均在百分之百. The “J2553 Wilson Cloud Chamber” method was introduced in the book “Methods for Detecting Radiographs” on page 335 of the New Senior High School Physics. Because the cloud room method can visually and intuitively show the track of radiation, students have a high interest. This article describes an experiment where the author used a homemade simple cloud chamber and phosphor (radioactive source) to demonstrate the radiation track. Many experiments in the classroom demonstrate obvious results, with a success rate of 100%.