Organic pesticides are typical pollutants in the environment.Natural degradation is the main way of removing organic pesticides in soils.Mechanisms of natural degradation,including biodegradation,photolysis,hydrolysis,and chemical oxidation were expatiated,and methods and progresses of the research on natural degradation of organic pesticides in soils were summarized.Problems of the current study on natural degradation were pointed out.And orientation of the study was predicted in the end of this paper.