A slide fastener (1, 21) with a separable bottom end stop, including: a slider that passes through element rows each including coil- or zigzag-shaped continuous fastener elements fixed to opposing tape side edge portions of a pair of left and right fastener tapes; an insert member fixed to an end of one element row; and a pivot support member (12, 22) fixed to an end of the other element row, being characterized in that the insert member includes an insert plate portion of a thin plate form that is fixed to front and back tape surfaces of the fastener tape and has first and second surfaces, and a pivot shaft portion disposed to protrude on an end portion of the insert plate portion at a side opposite to the element row, the pivot support member (12, 22) includes first and second surfaces and includes a box pin portion that extends from an end of the element row to a tape end portion side in a tape length direction and holds the slider and a box portion that extends from the box pin portion, the box portion having a nearly J shape that allows the pivot shaft portion to be engageable and disengageable from a side of the pivot support member (12, 22) and to be engageable and disengageable through an element guide passage formed inside the slider, the pivot shaft portion is disposed to protrude only on the first surface of the insert plate portion, and the pivot support member (12, 22) includes a protrusion that extends toward a tape outer side from the first surface side of the box pin portion and supports the first surface side of the insert plate portion at the time of coupling of the element rows and a flat plate-like support portion (12f, 22f) that extends toward the tape outer side from the second surface side of the box portion and supports the second surface side of the insert plate portion at the time of coupling of the element rows. a slider that passes through element rows each including coil- or zigzag-shaped continuous fastener elements fixed to opposing tape side edge portions of a pair of left and right fastener tapes; an insert member fixed to an end of one element row; and a pivot support member (12, 22) fixed to an end of the other element row, being characterized in that the insert member includes an insert plate portion of a thin plate form that is fixed to front and back tape surfaces of the fastener tape and has first and second surfaces, and a pivot shaft portion disposed to protrude on an end portion of the insert plate portion at a side opposite to the element row, the pivot support member (12, 22) includes first and second surfaces and includes a box pin portion that extends from an end of the element row to a tape end portion side in a tape length direction and holds the slider and a box portion that extends from the box pin portion, the box portion having a nearly J shape that allows the pivot shaft portion to be engageable and disengageable from a side of the pivot support member (12, 22) and to be engageable and disengageable through an element guide passage formed inside the slider, the pivot shaft portion is disposed to protrude only on the first surface of the insert plate portion, and the pivot support member (12, 22) includes a protrusion that extends toward a tape outer side from the first surface side of the box pin portion and supports the first surface side of the insert plate portion at the time of coupling of the element rows and a flat plate-like support portion (12f, 22f) that extends toward the tape outer side from the second surface side of the box portion and supports the second surface side of the insert plate portion at the time of coupling of the element rows.