For achievement of technology necessary for commercial development of deep-sea mineral resources, in recent years some developed countries conducted the swift-footed developmental study on deep-sea polymetallicnodule mining equipment. This paper generally reports on structure, principle, working mode and characters of all newly-emerging equipment in the collection system. Four ore lift methods are also introduced in this paper, among which the continuous chain-bucket method is limited for use due to cable rope winding, in the collection area the compressed air and hydraulic lift methods are preferred currently worldwide, and shuttle down-the-hole lift method prospects well.