Abstract: In this paper，the covering algorithm is discussed，and used to process a quantity of data，the precipitation record dated from 1960 to 2006 in Xuan Cheng city，Anhui province，so as to mine and use the potential information in the data as much as possible.And the result of the experiment shows that a pretty good result can be gotten with the covering algorithm applied on the prediction of precipitation.And this new attempt offers a new method to the application of forecast of precipitation，a new model to the research of climate technology.

Key words: covering algorithm, neighborhood covering, prediction of precipitation

摘要： 首先介绍了覆盖算法的基本原理，然后在此基础上，以安徽省宣城市1960年至2006年的降雨量数据为应用实例，尝试应用覆盖算法进行建模，利用算法的优势，充分挖掘和利用数据中的隐含信息，用于对该地区的降雨量状况进行预测和分析，从中检验覆盖算法在该领域的预测效果。实验表明将覆盖算法应用于降雨量预测中，能得到较好的预测结果，为降雨量预测提供了一个新的实现方法，为气象科学的研究提供了新的研究模型。

关键词: 覆盖算法, 领域覆盖, 降雨量预测