In the first part, the penman discuss the conception of encouragement investigation, then distinguish encouragement investigation and correlative conceptions, and discuss its validity and reason.

• 第一部分作者从诱惑侦查的概念出发，严格区分了诱惑侦查与相关概念，界定了诱惑侦查制度讨论的范围，并对诱惑侦查与我国刑诉制度的协调性出发，对诱惑侦查制度的合理性、合法性作了探讨。