Abstract: A double-wire terminal block structure includes an insulation housing, a conductive terminal block, and a clamp terminal block. The insulation housing includes a press hole and a press block movable with respect to the press hole. The conductive terminal block has a base and two extension arms bent and extending from the base. The clamp terminal block includes a base plate positioned on the base, two flexible arms bent from the base plate, and a contact portion connected to each flexible arm. The press block passes through between the two flexible arms to press each contact portion, so that the two flexible arms are resiliently released from contact with the two extension arms to allow wires to be inserted and clamped between the flexible arms and the extension arms. Accordingly, connecting wire can be achieved easily, conveniently, and efficiently.