In order to carry out the effect evaluation in drought-resistant artificial precipitation enhancement operation in time, Using the data of the artificial precipitation enhancement experiment base of the Yangtse River and the Huai River area, the effects of two artificial precipitation enhancement operations on 9th June and 3rd August,2005 are analyzed by means of the methods of area rainfall comparison analysis, regression analysis of the surface precipitation enhancement and physical testing method of precipitation enhancement effect.The results show that ideal positive effects are obtained in both the two drought-resistant operations, which added the rainfall from 120% to 140%.