Based on the comprehensive research of seismic, logging, core, and outcrop data, the platform edge slope developed in Cambrian-early Ordovician in southwestern Tarim Basin was proposed. The slope is generally retrogradated wide gentle slope, and distributes along the connection line of kandilike-yecheng-shenghe2-macanl. The character and location of these slopes are obviously diversified and they migrate from southern basin to northern platform in different phases of Cambrian-early Ordovician, and exist as a wide gentle slope in Cambrian, and develop into rimmed slope. The occurrence of the platform edge slope indicates that the existence of platform edge of high-energy facies in Manan-Hetianhe area and deep-shelf in southwestern Tarim Basin, which plays an important role in reservoir evaluation and source predication in southwestern Tarim Basin.%综合地震、测井、岩心、露头等资料,提出寒武纪—早奥陶世时期塔里木西南部发育台地边缘斜坡带.该斜坡带沿坎地里克—叶城—胜和2井—玛参1井连线一带呈近东西向展布,整体表现为退积型台缘缓斜坡.在寒武纪—早奥陶世的不同时期,该斜坡带性质和分布位置略有变化,寒武纪为宽缓斜坡,早奥陶世为弱镶边缓斜坡,斜坡带具有向北部台地逐期缓慢迁移的特点.塔西南台缘坡折带的存在表明玛南—和田河地区台缘高能相带和塔西南深水陆棚相带存在的可能性,对该区的烃源岩和储层评价预测具有重要意义.
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