Shipyard profile of Lingshan Island showed a very good exposure of slump bodies. According to field observation, the lithology unites consisted mainly of thick sandstone and interbedded sandstone and shale. Based on different sedimentary characters, the sandstones were thought to be formed by sand debris flow and turbidity flow. The interbedded sandstone and shale displayed sole marks and graded bedding, indicating far-end turbidity current in quiet water body. Slump folds, syngenetic faults and sandy lenses were the main structures in the slump body. Slump folds emerged in sandstone, interbedded sandstone and shale ,shale. With the strength of shear, the stretch of hinges of folds was parallel to the slump direction, forming curvilinear folds and soft sheath folds. The syngenetic faults consisted in the sandstone, forming both normal faults and reverse faults under corresponding strain mechanism. The sandy lenses consisted of synsedimentary boudinage and fault block. Three glide surfaces and slump bodies were recognized. An intact slump body was made of bottom glide surface, lower thick sandstone, mediate deformed interbedded sandstone and shale, upper undeformed interbedded sandstone and shale. The arrangement of slump bodies afforded a clue about the forming process of a slump body, i e, the lower and mediate parts slumping along the glide surface and covered by the upper part. On the basis of ordering and similarity ,the gravity slump of sufficient substances was suggested for the slump body.