“毒树之果”原则是美国法院在多年的刑事审判中逐步总结的证据规则之一。毒树之果一词中的“毒树”指的是采用非法方式收集到的刑事证据,以非法证据为线索进而获得的其他证据,则为毒树的“果实”。1“果”之渊源“毒树之果”原则作为非法证据排除的规则,对遏制办案人员刑讯逼供,保护刑事被告人的基本权利有着进步作用。此规则创立于美国二十世纪二十年代西尔弗索恩木材公司诉合众国案中,著名的霍姆斯大法官提出“禁止以不当方式取证的 The ”fruit of the poisonous tree“ principle is one of the rules of evidence that the U.S. courts gradually summarize in many years of criminal trials. The term ”poison tree“ in the word ”poison tree“ refers to the criminal evidence collected by illegal means and the other evidence obtained by illegitimate evidence is the ”fruit“ of the poison tree. The origin of ”fruit“ and the principle of ”fruit of poisonous tree“ as rules for excluding illegal evidence have a positive effect on deterring investigators from torture and protecting the basic rights of criminal defendants. This rule was founded in the United States in the twenties twenty-second Silverstone timber company v. United States case, the famous Lord Justice Holmes proposed ”Prohibition of forensics by improper means