DC cable connector

The invention provides a DC cable connector which comprises a cylindrical high voltage shielding layer 7, cylindrical joint insulation layers 9 and a joint shielding layer 10 which are coaxially arranged from inside to outside. Coaxial symmetrical horn-shaped stress cones 8 are embedded to the inner walls of the joint insulation layers 9 of two ends of the cylindrical high voltage shielding layer 7, and two horn openings are symmetrical. Each of the horn-shaped stress cones 8 comprises a cylindrical narrow port end and a wide port end whose axial section is a pair of symmetrical arcs. The inner wall of each of the joint insulation layers 9 is provided with a groove for embedding the narrow ends of the stress cones 8 and a convex block for embedding the high voltage shielding layer 7. According to the DC cable connector, the connector structure design is optimized, the electric field intensity in a stress cone root, a high voltage shielding layer root and the joint insulation layers is reduced, the field inten