A jig for processing an end of a shielded electric wire comprising two core electric wire made by covering two upper and lower electric wires parallel to each other composed of a conductive core wire and an insulating cover with a conductive braided wire, and by covering an outside of the braided wire with an insulating cover as an outermost layer, said insulating cover has a slit in a longitudinal direction of said shielded electric wire, and said conductive braided wire is in an oval sectional shape, comprising: a pair of claw portions each having a slim portion at a front half and a wide portion at a rear half, the slim portion is formed thinner than the wide portion in a horizontal direction and in a vertical direction; a first moving member configured to move the pair of claw portions back and forth, characterized in that the first moving member is configured to move the pair of claw portions back and forth so as to insert the slim portions into triangle shaped gaps formed between an outer face of the insulating cover and an inner face of the outer braided wire in between the upper and lower pair of electric wires of the shielded electric wire, an opening member is configured to open the pair of claw portions while the slim portions are inserted into said triangle shaped gaps; and a second moving member is configured to move the pair of claw portions back and forth so as to insert the slim portions and the wide portions into an inside of said braided wire of the shielded electric wire, wherein the first moving member includes: a first toggle lever; a pair of link plates linked to the first toggle lever with a link member and to which the pair of claw portions is fixed; and a guide member supporting the pair of link plates movably back and forth, and the second moving member includes: a second toggle lever; and a movable block linked to the second toggle lever and the guide member and supporting the first toggle lever,wherein the opening member includes: a pair of long holes provided on the pair of link plates; a pair of first pins disposed at the guide member side and slidably engaged with the pair of long holes; and a pair of second pins disposed more inside than the pair of first pins and linking the link member with the pair of link plates. a pair of claw portions each having a slim portion at a front half and a wide portion at a rear half, the slim portion is formed thinner than the wide portion in a horizontal direction and in a vertical direction; a first moving member configured to move the pair of claw portions back and forth, characterized in that the first moving member is configured to move the pair of claw portions back and forth so as to insert the slim portions into triangle shaped gaps formed between an outer face of the insulating cover and an inner face of the outer braided wire in between the upper and lower pair of electric wires of the shielded electric wire, an opening member is configured to open the pair of claw portions while the slim portions are inserted into said triangle shaped gaps; and a second moving member is configured to move the pair of claw portions back and forth so as to insert the slim portions and the wide portions into an inside of said braided wire of the shielded electric wire, wherein the first moving member includes: a first toggle lever; a pair of link plates linked to the first toggle lever with a link member and to which the pair of claw portions is fixed; and a guide member supporting the pair of link plates movably back and forth, and a first toggle lever; a pair of link plates linked to the first toggle lever with a link member and to which the pair of claw portions is fixed; and a guide member supporting the pair of link plates movably back and forth, and the second moving member includes: a second toggle lever; and a movable block linked to the second toggle lever and the guide member and supporting the first toggle lever,wherein the opening member includes: a pair of long holes provided on the pair of link plates; a pair of first pins disposed at the guide member side and slidably engaged with the pair of long holes; and a pair of second pins disposed more inside than the pair of first pins and linking the link member with the pair of link plates. a second toggle lever; and a movable block linked to the second toggle lever and the guide member and supporting the first toggle lever,wherein the opening member includes: a pair of long holes provided on the pair of link plates; a pair of first pins disposed at the guide member side and slidably engaged with the pair of long holes; and a pair of second pins disposed more inside than the pair of first pins and linking the link member with the pair of link plates. a pair of long holes provided on the pair of link plates; a pair of first pins disposed at the guide member side and slidably engaged with the pair of long holes; and a pair of second pins disposed more inside than the pair of first pins and linking the link member with the pair of link plates.