In a fuel vapor pipe structure including a plurality of cut valves for passing or cutting a fuel vapor at inside of a fuel tank, a pipe joint connected to the cut valves for communicating the fuel vapor to a canister, and a resin tube for connecting the cut valve and the pipe joint, the resin tube is bent to pipe by making a length of the resin tube longer than a length of connecting connection tube portions of the cut valve and connection tube portions of the pipe joint and arranging the connection tube portion of the cut valve to shift from a straight line of connecting a center of the cut valve and a center of the pipe joint by a predetermined angle in a horizontal direction.