The invention discloses a cable connector which comprises a shell and an inner core. The inner core is arranged in a hole of the shell, and a cable extends into the hole of the shell from one end of the shell to be connected with a terminal in the inner core. Primary encapsulation is conducted on the part, which the cable extends into, of the shell, or the whole outer wall of the shell, or the part, outside the shell, of the cable, or the whole outer wall of the cable to form a sheath which is of an integrated structure and covers the part, where the cable extends into the shell, of the shell, or the whole outer wall of the shell, or the part, outside the shell, of the cable, or the whole outer wall of the cable in a seal connection mode. The cable connector is characterized in that a corrugated pipe is further arranged on the cable located outside the port of the sheath, and a jacket which is of an integrated structure, and covers the part, located at the nesting joint, of the sheath, or the whole outer wall of the sheath, or a part of the corrugated pipe or the whole outer wall of the corrugated pipe in a sealed connection mode is formed through secondary encapsulation; a cable tightening structure is further arranged on the shell; a metal lining is arranged between the cable tightening structure and the cable, and the metal lining covers a cable shielding layer. The cable connector is good in airtightness, high in reliability and long in service life.