High-reliability low-dwarfing inter-board high-speed connector

The invention discloses a high-reliability low-dwarfing inter-board high-speed connector, which comprises a plug connector and a socket connector, the plug connector and the socket connector are in plug-in fit, the plug connector comprises a head base and a plurality of groups of plug-in joint pieces, the socket connector comprises a seat base and a plurality of groups of contact joint pieces, and the plug-in joint pieces are in plug-in fit with the socket connector. The plug-in connector comprises a plug-in terminal, a plug-in welding end and a plug-in connecting end, and the contact connector comprises a connecting terminal, a contact welding end and a contact connecting end. The plurality of groups of plug-in connectors and the contact connectors are plugged and fixed to form a signal transmission body of the connector, the length of a signal transmission path is shortened, the height of the connector is reduced, the plurality of groups of plug-in connectors and the contact connectors are arranged in a sta