An electrical connector includes an insulating body having an accommodating base and at least one tongue plate extending forwardly from the accommodating base. The tongue plate has at least one accommodating space in communication with the accommodating base. Each accommodating space being provided with at least one stopper. At least one first conductive terminal and at least one second conductive terminal are received in the accommodating base. The second conductive terminal has a second connecting portion and a second contacting portion extending towards the accommodating space. The first conductive terminal is partially located below the second connecting portion, and has at least a portion extended under the stopper. The second connecting portion is located at a level higher than that of the stopper. This arrangement can prevent the first conductive terminal from contacting with the second conductive terminal, and a normal connection of the electrical connector is guaranteed.