Based on the observation in field, it is indicated that deposits of gravitydriven process are well developed in the Xiguayuan Formation of Low Cretaceous in the Luanping Basin, Northern Hebei. The slide and slump deposits in the Xiguayuan Formation are described. It is indicated that some compression deformations in the outcrop are formed by sedimentary process rather than tectonic origin. After introducing the sedimentary environment of the gravity flow deposit in the Xiguayuan Formation, some gravity flow deposit in the outcrop are delineated and they can be reasonably interpreted by sandy debris flow. Based on the study on slide and slump (mass movement) and the deposits of sandy debris flow—turbidity current, integrated the results of the former study on fluvial fan—fan delta, gravitydriven process is considered to be the more important transport mechanism.