ELECTRIC WIRE FIXING STRUCTURE AND WIRE HARNESS

An electric wire fixing structure includes a metal protector (20) that houses a protection target part (10a) of an electric wire (10) in an electric wire housing chamber (21) on an inner side and allows the electric wire (10) in the electric wire housing chamber (21) to be led out from an electric wire outlet (22a) of the electric wire housing chamber (21); and a fastening structure (60) that fixes the protector (20) to a metal fastening target (CA). The fastening structure (60) includes a male screw member (61), a through-hole (62) formed in the protector (20) and through which the male screw member (61) is inserted, and a female screw part (63) provided in the fastening target (CA) and in which the male screw member (61) is screwed. At least a part of the protector (20) is abutted against the fastening target (CA) when the protector (20) is fixed to the fastening target (CA).