根据油气战略选区的需要,完成了野外地质考查、构造平衡恢复、构造格局及演化以及原型盆地分析,认为黔南坳陷晚古生代以来,经历了四堡、晋宁、广西、印支,燕山等主要构造运动,以及三期成盆与四期盆山转换过程,使得坳陷构造变形与油气分布非常复杂.坳陷由铜仁—三都、贵阳—镇远、紫云—罗甸3条边界深大断裂围限大致呈三角形.东部边界铜仁—三都断裂近南北向展布,呈弧形向西凸出,为一条断面西倾的逆冲断裂;西北部边界贵阳—镇远断裂,北东走向,断面近直立,性质为右行压扭;西南部边界紫云—罗甸断裂,北西走向,断面近直立,性质为左行压扭.坳陷内主要发育多个近平行、大致等间距分布的南北向褶皱冲断构造带,伴生发育多条近东西向的正断层,南北边界断裂附近见少量北东和北西向断裂构造.这些构造在平面上的组合关系表明,它们是在由东向西冲断推覆应力场作用下形成的有成因联系挤压构造系统.挤压变形强度东强西弱,是一个典型的冲断推覆构造系统,可以明确划分为东段变形强烈的根带、变形较强的中带和西部变形较弱的锋带等3个变形区.坳陷东北部强烈隆升,西南部持续沉降.长顺—三都一线以南地区沉降幅度大,沉积地层厚度巨大,构造变形相对较弱,是油气保存条件有利地区.利用构造变形强度指数,结合地层发育等特征定性定量评价了构造保存条件,优选了6个一类勘探靶区. According to the needs of strategic oil and gas constituency, the field geology examination, tectonic balance recovery, tectonic pattern and evolution and prototype basin analysis have been completed. It is considered that the southern Guizhou depression has undergone four stages since the Late Paleozoic such as Si Bao, Jinning, Guangxi, Indo-China and Yanshan Main tectonic movement, and the basin-to-basin transition process of the third stage into the basin and the fourth stage, making the tectonic deformation and oil-gas distribution in the depression very complicated. The depression is composed of deep faults such as Tongren-Sandu, Guiyang- Zhenyuan, Ziyun- Luodian The enclosures are generally triangular in shape. The Tongren-Sanduan fault in the eastern margin is distributed in the north and south direction and protrudes westward in an arc to form a western thrust thrust fault; the Guiyang-Zhenyuan fault in the northwest boundary, the northeast strike, Near the upright, the nature of right-lateral buckling; the western boundary of the Ziyun-Luodian fault, northwest strike, nearly vertical section, the nature of the left row of compression .Damp depression mainly in the development of multiple parallel, roughly equidistant distribution of north and south A number of NE-NW normal faults are associated with fold-thrust faults and a small number of NE and NW faults are observed in the vicinity of the northern-southern boundary faults. The combination of these structures in the plane shows that they are in the east- The tectonic contact-compression tectonic system formed under the action of thrusting and thrusting is a typical thrust-nappe structure system that can be clearly divided into strong deformed root zone in the eastern segment, Deformation zone with strong deformation and frontal zone with weak deformation in the west of China. The northeast of the depression was strongly uplifted and the southwestern part continued to settle down.The area south of Changshun-Sandu line experienced large settlement and the thickness of sedimentary formation was huge , The tectonic deformation is relatively weak, and it is a favorable area for oil and gas preservation.Qualitative and quantitative evaluation of tectonic preservation conditions by means of tectonic deformation intensity index and stratigraphic development and other characteristics shows that six types of exploration target areas are preferred.