An electrical connector comprising: at least two insulated bases jointing with each other, each base provided with a connecting hole for a wire to be inserted in; a soldering terminal fixed in each base, which is used for the wire electric connecting with a circuit board; an elastic plate disposed on the soldering terminal, including a free end which tends to be arranged against the soldering terminal and a fixing end arranged on the soldering terminal; and a button disposed on the upper portion of each base, the bottom of the button arranged against the free end of the elastic plate; wherein the soldering terminal includes a current-carrying main plate, a supporting plate protruding outward on the lower portion of the current-carrying main plate which is arranged against the bottom of the fixing end of the elastic plate, and a resisting flange formed by folding outward the upper edge of the current-carrying main plate which is arranged against the top of the free end of the elastic plate; wherein the current-carrying main plate, the supporting plate and the resisting edge form the soldering terminal with a C-shaped transverse section; wherein two welding foots are formed on the bottom of the soldering terminal, which respectively locate at two sides of the supporting plate and stagger fore and aft; wherein a transverse section of the elastic plate is V-shaped, and the elastic plate includes a first side whose end refers to the free end, a second side whose end refers to the fixing end, and a circular arc portion connecting the first side and the second side; wherein a locating pin, which extends vertically outward, is formed on the inner wall of each base and matches with the dimension of the circular arc portion; characterized in that the edge of the second side of the elastic plate is provided with a square slot, the current-carrying main plate of the soldering terminal is provided with a gap at the side nearby the supporting plate for the fixing end to insert in, and the gap and the lower portion of the current-carrying main plate form into a kidney-shape portion, which matches with the dimension of the square slot and is provided for the square slot of the elastic plate to locate on, so as to make the fixing end of the elastic plate to connect with the soldering terminal. at least two insulated bases jointing with each other, each base provided with a connecting hole for a wire to be inserted in; a soldering terminal fixed in each base, which is used for the wire electric connecting with a circuit board; an elastic plate disposed on the soldering terminal, including a free end which tends to be arranged against the soldering terminal and a fixing end arranged on the soldering terminal; and a button disposed on the upper portion of each base, the bottom of the button arranged against the free end of the elastic plate; wherein the soldering terminal includes a current-carrying main plate, a supporting plate protruding outward on the lower portion of the current-carrying main plate which is arranged against the bottom of the fixing end of the elastic plate, and a resisting flange formed by folding outward the upper edge of the current-carrying main plate which is arranged against the top of the free end of the elastic plate; wherein the current-carrying main plate, the supporting plate and the resisting edge form the soldering terminal with a C-shaped transverse section; wherein two welding foots are formed on the bottom of the soldering terminal, which respectively locate at two sides of the supporting plate and stagger fore and aft; wherein a transverse section of the elastic plate is V-shaped, and the elastic plate includes a first side whose end refers to the free end, a second side whose end refers to the fixing end, and a circular arc portion connecting the first side and the second side; wherein a locating pin, which extends vertically outward, is formed on the inner wall of each base and matches with the dimension of the circular arc portion; characterized in that the edge of the second side of the elastic plate is provided with a square slot, the current-carrying main plate of the soldering terminal is provided with a gap at the side nearby the supporting plate for the fixing end to insert in, and the gap and the lower portion of the current-carrying main plate form into a kidney-shape portion, which matches with the dimension of the square slot and is provided for the square slot of the elastic plate to locate on, so as to make the fixing end of the elastic plate to connect with the soldering terminal.