An electrical connector includes: an insulating body, having a mounting surface and a plurality of terminal slots concavely provided on the mounting surface; a grounding sheet, having a connecting arm and a plurality of abutting portions abutting the mounting surface; and at least one terminal, mounted to the insulating body along a backward-from-front direction. Each of the abutting portions is located at one side of a corresponding one of the terminal slots. An elastic sheet is located at an opening of one of the terminal slots, and is provided at one side of a corresponding abutting portion. The terminal abuts the elastic sheet. The terminal has a contact portion entering a corresponding one of the terminal slots to be electrically connected to a mating device.