Abstract:Based on abundant data from sampling and testing, from the aspect of pollution source distribution and hydrogeological condition, in this paper, the content and degree of organic pollutants of the groungwater overland in the lower reach plain of the Yellow river have been studied. It is showed that the groungwater has been well received by organic pollutants and formed many groungwater contaminated areas. The percentage of organic pollutants detected are 35.5%, detected polluted materials are 29 species, and monosamples are 9 species. The contents or some organic materials are over the standard of drinking water. It has caused the quality of groungwater begin deteriorate. Distribution of polluted areas has a close relation with the degree and types of the contaminated sources.