A bidirectional electrical connector includes a floating or fixed tongue. One metal plate is deployed without overlap to manufacture upper and lower contact interfaces and a metal tongue. The tongue and the H-shaped limit structure can eliminate the short-circuited problem when the bidirectional electrical connector is docked with a complementary electrical connector. The metal tongue or the structure with the metal reinforcement sheets added into the insulation tongue can optimize the use of the bidirectional electrical connector. A snap structure on a metal housing facilitates smooth docking, and the docked state cannot easily get loose, thereby enhancing the docking stability.