由于毒品案件属于“无被害人犯罪案件”,毒品交易是在犯罪人之间秘密进行的,作案手段和作案方法较其他刑事犯罪更为狡猾隐蔽。因此,无论是对犯罪行为的发现,还是对犯罪证据的收集都十分困难,给侦查破案带来一定的难度。为了有效打击毒品犯罪,在毒品案件侦查中经常使 Since drug-related cases are classified as “victimless crimes”, the drug trade is conducted in secret between criminals. The methods of committing crimes and committing crimes are more cunning than other criminal offenses. Therefore, whether it is the discovery of criminal acts or the collection of criminal evidence, it is very difficult to bring some difficulties to the detection and detection. In order to effectively crack down on drug crimes, it is often used in the investigation of drug cases