An electrical receptacle connector includes an insulator, a first contact set, a second contact set, a U-shaped shielding structure, and a first plate member. The insulator includes a tongue and a base connected to the tongue. The first contact set and the second contact set are disposed inside the insulator and exposed out of a first side and a second side of the tongue opposite to each other. The U-shaped shielding structure is disposed on the base and at least partially exposed out of the base. The first plate member extends from an end portion of the U-shaped shielding structure along a third side adjacent to the first side and the second side of the tongue and toward a front end of the tongue. The first plate member includes a first step structure. Therefore, it effectively prevents the tongue from being worn or deformed by insertion and withdrawal forces.