A connector includes a sealing member, a first shell, a second shell, and a rotating member. The sealing member has a through hole for a cable to pass through, and the sealing member is fastened to the first shell. The second shell has an abutting surface that is disposed toward an outer periphery of the sealing member, and the abutting surface is at an included angle with an axis of the through hole. The rotating member is rotatably disposed on the second shell, and the rotating member is connected to the first shell. When the rotating member rotates to a first position, the abutting surface abuts against the outer periphery of the sealing member, so that an inner wall of the through hole fits the cable in a sealed manner.