PROBLEM TO BE SOLVED: To provide an air-conditioning drain pipe strong in impact from the outside.SOLUTION: An air-conditioning drain pipe 10 includes a cylindrical foam layer 2 containing a vinyl chloride-based resin B, and a non-foam outer layer 3 provided on an outer surface of the foam layer and containing vinyl chloride-based resin A, where an expansion rate of the foam layer is 3.5 times or more, the vinyl chloride-based resin A is a mixture of vinyl chloride resin and elastomer resin, or a graft polymer that elastomer resin is subjected to graft polymerization on the vinyl chloride resin.SELECTED DRAWING: Figure 1

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