Soil washing is one of the most used physical and chemical methods in remediation of POPs contaminated sites. This method refers to the process of washing the contaminated soil in depth with an object-specific kind of washing solution; pooling the solution for separation of the pollutants; recycling the purified solution for reuse; and safely disposing the pollutants. Owing to differences in position of soil washing at the contaminated site, type of the washing solution and way of the washing, soil washing varies in type, like multi-step washing, washing aided with ultrasound waves, electricity-powered washing, chemical washing, etc., which can be selected for use site-specifically to enhance effectiveness of the washing. Efficiency of the remediation is obviously affected by a number of factors, such as soil texture, properties of contaminants, properties of the solution, optimal conditions for soil washing and reuse efficiency of the solution. Problems with the soil washing method, orientation of the research in future and its application are also discussed. Considering the scope of its application and cost factors, soil washing is considered a suitable technology in line with the actual status of POPs contaminated sites in China, and may have some prospect of extensive application.