A shielded cable fixing structure includes a shielded cable that includes an electric wire, a braid for covering the electric wire, and a sheath for covering the braid, an insulation housing that receives a terminal fitting electrically connected to the electric wire, a pair of split shield shells in which the insulation housing is mounted, a groove-shaped portion press-formed on a section of each of the split shield shells to cover a wire lead-out port of the insulation housing, from which the electric wire is led out, and is recessed on an outer surface of each of the split shield shells, and a braid fixing member fixed on an annular mounting groove constituted by the groove-shaped portions of the split shield shells, in a state where the braid is disposed between the annular mounting groove and the braid fixing member.