A wire harness exterior member having a shape of a tube body configured to cover a conducting path, the wire harness exterior member comprising: a plurality of straight tube portions including a plurality of straight tube bodies and at least one upper and one lower rigidity adding portion (28, 128, 228, 328, 628) and formed as inflexible portions, and a plurality of flexible tube portions continuing from the plurality of straight tube portions and formed as flexible portions, wherein the plurality of straight tube bodies are configured to be arranged at a vehicle underfloor portion of a vehicle, the at least one upper and one lower rigidity adding portion (28, 128, 228, 328, 628) are not provided on said plurality of flexible tube portions comprising a first flexible tube portion of the plurality of flexible tube portions and a second flexible tube portion of the plurality of flexible tube portions, the wire harness exterior member is an extrusion molded resin product, the plurality of flexible tube portions are formed in an accordion tube shape having a depression and a protrusion formed around the periphery of the flexible tube portion, the depression and the protrusion being more than one in number continuously in the direction of the length of each of the flexible tube portions, and the at least one upper rigidity adding portion (28, 128, 228, 328, 628) is configured as heat dissipating portion and the at least one lower rigidity adding portion (28, 128, 228, 328, 628) is configured as an anti-chipping portion (29, 129, 229, 329, 629), wherein the at least one upper and one lower rigidity adding portion (28, 128, 228, 328, 628) are formed to have a shape extending in an axial direction of each of the straight tube bodies, between the first flexible tube portion and the second flexible tube portion, and wherein the wire harness exterior member is configured to be fixed to the vehicle underfloor portion of the vehicle such that the at least one lower rigidity adding portion (28, 128, 228, 328, 628) protrudes outwardly on an outer surface of the straight tube body toward a lower side of the vehicle, and the at least one upper rigidity adding portion (28, 128, 228, 328, 628) protrudes outwardly on the outer surface of the straight tube body toward an upper side of the vehicle, characterized in that the at least one upper and one lower rigidity adding portion (28, 128, 228, 328, 628) of each of the straight tube bodies each extend from a first longitudinal end of each of the straight tube bodies to a second longitudinal end of each of the straight tube bodies opposite the first longitudinal end to add rigidity to the straight tube bodies. a plurality of straight tube portions including a plurality of straight tube bodies and at least one upper and one lower rigidity adding portion (28, 128, 228, 328, 628) and formed as inflexible portions, and a plurality of flexible tube portions continuing from the plurality of straight tube portions and formed as flexible portions, wherein the plurality of straight tube bodies are configured to be arranged at a vehicle underfloor portion of a vehicle, the at least one upper and one lower rigidity adding portion (28, 128, 228, 328, 628) are not provided on said plurality of flexible tube portions comprising a first flexible tube portion of the plurality of flexible tube portions and a second flexible tube portion of the plurality of flexible tube portions, the wire harness exterior member is an extrusion molded resin product, the plurality of flexible tube portions are formed in an accordion tube shape having a depression and a protrusion formed around the periphery of the flexible tube portion, the depression and the protrusion being more than one in number continuously in the direction of the length of each of the flexible tube portions, and the at least one upper rigidity adding portion (28, 128, 228, 328, 628) is configured as heat dissipating portion and the at least one lower rigidity adding portion (28, 128, 228, 328, 628) is configured as an anti-chipping portion (29, 129, 229, 329, 629), wherein the at least one upper and one lower rigidity adding portion (28, 128, 228, 328, 628) are formed to have a shape extending in an axial direction of each of the straight tube bodies, between the first flexible tube portion and the second flexible tube portion, and wherein the wire harness exterior member is configured to be fixed to the vehicle underfloor portion of the vehicle such that the at least one lower rigidity adding portion (28, 128, 228, 328, 628) protrudes outwardly on an outer surface of the straight tube body toward a lower side of the vehicle, and the at least one upper rigidity adding portion (28, 128, 228, 328, 628) protrudes outwardly on the outer surface of the straight tube body toward an upper side of the vehicle, characterized in that the at least one upper and one lower rigidity adding portion (28, 128, 228, 328, 628) of each of the straight tube bodies each extend from a first longitudinal end of each of the straight tube bodies to a second longitudinal end of each of the straight tube bodies opposite the first longitudinal end to add rigidity to the straight tube bodies.