本文从巡警大队长故意杀人案的曲折侦查历程谈起 ,分析了检察机关对侦查机关的侦查懈怠行为监督乏力的原因在于 :侦查启动程序不合理 ;检警关系欠科学 ;诉讼构造有待完善。据此作出了若干结论 This article discusses the twists and turns of the intentional homicide case of the patrol captain, and analyzes the reasons why the procuratorial organs are weak in supervision of the investigating authorities for lack of supervision. The reason is that the procedure of investigation is unreasonable, the relationship between prosecutor and police is less scientific, and the litigation structure needs further improvement. Several conclusions have been made accordingly