A power feeding control apparatus for controlling electric power supplied from an external power source to an electric vehicle provided with a battery and a charging circuit for charging the battery, comprising: power feeding lines (L, N) provided to supply the electric power from the external power source to the electric vehicle therethrough; a relay unit (RY1, RY2) arranged on the power feeding lines (L, N) to open and close the power feeding lines (L, N); a control circuit for controlling the relay unit (RY1, RY2); a leakage current detection circuit for detecting leakage current in the electric vehicle; a power supply circuit supplied with the electric power through the power feeding lines (L, N) to generate a control electric power; a housing for accommodating at least the power feeding lines (L, N), the relay unit (RY1, RY2), the control circuit, the leakage current detection circuit and the power supply circuit; a power source side connector to be removably connected to a socket of the external power source; a vehicle side connector to be removably connected to a power receiving connector of the electric vehicle; a first board on which the power supply circuit is mounted; a second board on which the control circuit and the leakage current detection circuit are mounted; and a power feeding line block provided separately from the first and the second board (4, 2) and having metal plates (31A, 31B, 32A, 32B, 33A, 34, 37A) constituting the power feeding lines (L, N), wherein the metal plates (31A, 31B, 32A, 32B, 33A, 34, 37A) are insertion-molded in the power feeding line block, characterized in that the power supply circuit is formed of circuit components mounted on one surface of the first board and one surface of the power feeding line block faces the other surface of the first board, and electric connection between the power feeding lines (L, N) and input terminals of the power supply circuit is made by lead plates (31C, 33B), the lead plates (31C, 33B) are formed by having the metal plates, which are covered by a resin molding portion, partially protrude outwards beyond the resin molding portion, and the control circuit is formed of circuit components mounted on one surface of the second board, which is electrically connected to the power feeding lines (L, N) and the power feeding line block is interposed between the first board and the second board such that the other surface of the power feeding line block faces the second board. power feeding lines (L, N) provided to supply the electric power from the external power source to the electric vehicle therethrough; a relay unit (RY1, RY2) arranged on the power feeding lines (L, N) to open and close the power feeding lines (L, N); a control circuit for controlling the relay unit (RY1, RY2); a leakage current detection circuit for detecting leakage current in the electric vehicle; a power supply circuit supplied with the electric power through the power feeding lines (L, N) to generate a control electric power; a housing for accommodating at least the power feeding lines (L, N), the relay unit (RY1, RY2), the control circuit, the leakage current detection circuit and the power supply circuit; a power source side connector to be removably connected to a socket of the external power source; a vehicle side connector to be removably connected to a power receiving connector of the electric vehicle; a first board on which the power supply circuit is mounted; a second board on which the control circuit and the leakage current detection circuit are mounted; and a power feeding line block provided separately from the first and the second board (4, 2) and having metal plates (31A, 31B, 32A, 32B, 33A, 34, 37A) constituting the power feeding lines (L, N), wherein the metal plates (31A, 31B, 32A, 32B, 33A, 34, 37A) are insertion-molded in the power feeding line block, characterized in that the power supply circuit is formed of circuit components mounted on one surface of the first board and one surface of the power feeding line block faces the other surface of the first board, and electric connection between the power feeding lines (L, N) and input terminals of the power supply circuit is made by lead plates (31C, 33B), the lead plates (31C, 33B) are formed by having the metal plates, which are covered by a resin molding portion, partially protrude outwards beyond the resin molding portion, and the control circuit is formed of circuit components mounted on one surface of the second board, which is electrically connected to the power feeding lines (L, N) and the power feeding line block is interposed between the first board and the second board such that the other surface of the power feeding line block faces the second board.