Water stop structure, wire harness, and method for manufacturing wire harness

A method for manufacturing a wire harness in which a water stop portion for stopping water between a water stop member and an electric wire bundle obtained by bundling a plurality of electric wires is provided on the electric wire bundle, the method comprising:

• a spacer placing step of mounting at least a pair of spacers on an outer periphery of the electric wire bundle and disposing the spacers at an interval in a longitudinal direction of the electric wire bundle at a position in the electric wire bundle including a water stop section that requires water stop between the water stop member and the electric wire bundle;
• a braid mounting step of covering the outer periphery of the electric wire bundle including the spacers with a tubular braid;
• and
• a forming step of filling with a resin so as to cover the water stop section in the electric wire bundle to form the water stop portion.