The invention discloses an electric connector socket. A vortex groove is formed in the side wall of the tail part of ashell; and a starting opening of the vortex groove is located in the tail end faceof the shell. In the track direction of the vortex groove, a low point and a high point are sequentially arranged at the closing-in part of the vortex groove; the mounting plate is mounted in the shell; a conical spring is arranged between the head of the mounting plate and the head of the inner cavity of the shell; a waist-shaped groove is formed in the mounting plate; positioning rods are installed on the side wall of the shell, part of the positioning rods are located in the kidney-shaped grooves, inserting holes are formed in the mounting plate, a frame body is arranged on the outer sidewall of the shell, a rotatable lock cylinder assembly is installed in the frame body, and a positioning structure matched with the lock cylinder assembly is arranged on the outer side wall of the mounting plate. The present invention further discloses an electric connector. The mounting plate can float, the insertion depth of the jack contact pins can be adjusted, and the contact resistance of thejack contact pins can be changed; when the socket and the plug are plugged, the double vortex grooves have guidance quality, the plug and the socket can be effectively locked at the vertex, the vortex grooves can be integrally machined and formed on the shell, and the socket is economical and efficient.