第一,以程序正义观念改善执法思想。只有认识到了程序正义所代表的现代民主与法治的精神,才具备了革除重实体轻程序、重专政轻民主、重打击犯罪轻保障人权的思想条件。第二,改革警察刑事诉讼执法工作机制。按照权力体制框定原则,调整警察职权的运行机制。第三,强化律师在侦查阶段的作用。明确律师在侦查阶段的辩护地位以及相应的辩护权利,从而在侦查阶段就形成控辩的制衡。第四,当警察在侦查阶段收集证据有重大违法时,须适用证据规则中的自白排除法则和违法证据排除法则。 First, improve the law enforcement concept with the concept of procedural justice. Only by recognizing the spirit of modern democracy and the rule of law as represented by the procedural justice can we have the ideological conditions of eliminating the heavy procedures, dictatorship, and democratization, and focusing our efforts on crime prevention and human rights protection. Second, reform police criminal lawsuit enforcement mechanism. In accordance with the principles of the framing of power system, adjust the operating mechanism of police powers. Third, to strengthen the role of lawyers in the investigation stage. Clear the defense position of lawyers in the investigation stage and the corresponding rights of defense, so as to form a check and balance between prosecution and defense during the investigation stage. Fourthly, when the police collect material evidence of breach of law during the investigation stage, the law of confession in exclusionary rules and the law of exclusion of illegal evidence shall be applied.