The invention provides a connector having a concave terminal embeded with a convex terminal which has a barrel portion. The barrel portion forms a box body taking the convex terminal as the bottom. Two terminals can be jointed and conducted by filling the soldering tin from the top side in the state of the embeded state of two terminals so as to improve the operation and reduce the poor conduction even in a librated apparatus and under the rigorous low temperature. The convex terminal has a holding portion constituted by the opposite protruding strip, which holds the convex terminal when the convex and concave terminal are embeded by inserting. A plurality of convex terminals are in a line in parallel on the shell and embeded with a plurality of convex terminals in a line at one side of the electrical device. The concavo-convex embeded connector used for an electric valve is easy and reliable to finish the embedding operation of the concave and convex terminals, reduce the production cost of the connector and improve the reliability.