In this paper, thorough review of current research situation is made to establish the classification and nomenclature of deep sea sediments which unify the quantification and can be easily operated. This paper also compares and calibrates sedimentation method and laser method for grain size determination, and discusses generality and comparability of the classification and nomenclature system. Innovative key technique and scheme of classification and nomenclature for deep sea sediments were put forward. The classification and nomenclature for deep sea sediments is designed to be a succession of shallow sea sediments classification.