An electrical connector disposed on a circuit board is provided. The electrical connector includes a terminal set having a plurality of terminals, a first insulator, at least one second insulator, and a third insulator. Each of the terminals has a contact portion, a soldering portion connecting to the circuit board, and a bending portion connected between the contact portion and the soldering portion. The first insulator is structurally integrated with the contact portions. The second insulator is structurally integrated with the terminals and is located between the bending portions and the soldering portions. The third insulator is locked with the second insulator.