Abstract: On November 17, 1984, a piece of ice fell down from sky onto the wheat field near Chenshanfang village of Meichun, Xishan city in eastern China. By investigating the scene, eye-witnesses and related departments of meteorology and aviation, the possibilities that the ice originated from artificial, meteorological or airplane events can be excluded. A few samples of the ice were submitted to serious experimental analyses, and the preliminary results show not only some differences between the ice and terrestria1 matters but also similarities between the ice and extraterrestrial matters. This is in favour of the viewpoint that the ice originated from extraterrestrial space, probably from a small comet. Further research on the fallen ice might be of great significance for understanding the nature of comets and water resource on the Earth, as well as relevant problems of meteorology, geology and astronomy.