PROBLEM TO BE SOLVED: To provide a grain-patterned rain gutter having wood touch obtained by mixing wooden powder to a styrene resin and a wooden pattern obtained by mixing colored pellet, while suppressing the heat deformation, improving shock resistance by the rubber components, and providing weatherability by coating the surface with transparent weather-proof resin. SOLUTION: Wooden based resin mixture mixing a wooden resin component formed by mixing not less than 5 pts.wt. and not more than 100 pts.wt. wooden powder with 100 pts.wt. styrene-based resin containing not less than 5 wt.% and not more than 40 wt.% rubber component with colored pellets composed of thermoplastic resin containing colorant is molded into a rain gutter. A coating layer not less than 20 m and not more than 200 m composed of transparent weather-proof resin containing 0.5 wt.% or more ultraviolet absorbing agent all beam permeability 70% or more, and clouding value 1-30% is provided on its surface.
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