In the criminal lawsuit,the compulsive sampling is a kind of investigating way often used by the investigation organ.In order to clarify the related problems of the compulsive sampling,the article is based on the legislation and the judicial practice in domestic and overseas countries as a foundation,having elaborated the legal nature of the compulsive sampling,the program control of that,including the ratification procedure of that,the noticing procedure of that,the implementing procedure of that,the proce...