A USB connector structure includes an insulating body, a circuit board, connecting terminals and conductive terminals. The insulating body includes a through notch therein and a plurality of terminal slots at a lower edge of the through notch; the circuit board is coupled to the through notch and has a first surface which set a plurality of goldfingers thereon, and a plurality of blind holes concavely formed at the rear of the goldfingers; each connecting terminal is coupled to a rear end of the circuit board and away from the goldfingers, and electrically connected to each goldfinger through the circuit board; each conductive terminal is coupled to the terminal slot and has a conducting portion disposed at the front of each conductive terminal, and the front of each conducting portion is disposed in the blind hole.