The invention relates to a magnetic plug and a magnetic socket. The magnetic socket comprises a socket body matching the plug, a socket main core electrically connected with a circuit power line, and a socket base. The socket body and the socket base are in sealing connection. The magnetic socket main core is arranged in a space formed by the socket body and the socket base. The magnetic socket main core is provided with a spring and a magnet/magnetic core. A guide rail extends downward from the middle of the lower surface of the socket body. When the guide rail is matched with the magnetic plug, the upper portion of the magnetic socket main core extends into the guide rail and moves up and down along the guide rail under the action of the spring and magnetic force. The magnetic plug and the magnetic socket have the characteristics of compact structure, small magnetic load and quick response, meet the needs of different customers, need no additional operation, and are safe and reliable. Electric shock accidents caused by direct contact and foreign body insertion are avoided effectively. According to the needs of different customers, the sealing performance and the bonding strength are improved greatly, and the magnetic plug and the magnetic socket can still be used normally even underwater or in a bad dust environment.