首先论述归纳了已发现隐蔽油气圈闭的主要种类，划分为地层!岩性型油气圈闭、复杂隐蔽构造型油气圈闭、复合型油气圈闭三大成因类型，依据形成油气圈闭的储、盖、运、圈、保条件中的主控因素，每一大类可包括储集体隐蔽型、油气储集空间隐蔽型、封盖条件隐蔽型、油气运移充注条件隐蔽型、圈闭形态与结构隐蔽型、圈闭构造位置隐蔽型、圈闭形成动力学条件隐蔽型、油气藏流体性质隐蔽型和保存条件隐蔽型9种简单因素控制型隐蔽油气圈闭，以及复杂因素控制型隐蔽油气圈闭,共10 种类型；然后综述了当前隐蔽油气圈闭的基本勘探理论和勘探技术与方法，强调多技术学科的联合是实现隐蔽油气圈闭勘探突破的根本前提。

The discovered subtle traps are divided into three genetic types, including stratigraphic#lithologic trap, complex subtle structural trap and combination trap. According to the main controlling factors for the trap forming, each of these types includes nine simple$factor controlling subtle traps and one complex%factor controlling subtle trap. The nine simple factors include reservoir body, reservoir space, sealing condition, migration and filling&up condition, trap shape and framework, trap position, dynamic condition of trap forming, reservoir fluid property and preservation condition. The current basic theories and techniques of the exploration for subtle traps are summarized, and the combination ofmultiple techniques is stressed to be the foundation of subtle trap exploration.