Abstract: Information insufficiency and information pollution have always been perplexing mankind and thus become a subject for discussion.In recent 20 years or so,the theoretical researches on information pollution have made great achievements.At the same time,there are still a lot of defects in the work which is to be improved by means of changing our thinking mode,discussing in details the concepts concerned,studing the nature and characters of the matter,analying thoroughly the cause of information,exploring feas...