Electric wire protecting pipe and wire harness

An electric wire protecting pipe that is a resin pipe into which electric wires are insertable, the electric wire protecting pipe comprising:

• a bending pipe portion that is easily bent and is provided with protruding portions and recessed portions that are alternately continuous with each other in an axial direction;
• and
• a straight pipe portion that is flat and is not easily bent in the axial direction,
• wherein in either the bending pipe portion or the straight pipe portion, a thickness of a lower wall portion that is disposed on a lower side when the electric wire protecting pipe is attached to a vehicle is greater than a thickness of a left wall portion and a right wall portion that are disposed on left and right sides, and the lower wall portion is a relatively thick-walled portion, whereas the left wall portion and the right wall portion are relatively thin-walled portions.