To obtain a vinyl chloride resin composition capable of obtaining a greatly improved effect on hot water resistance by adding a copolymer resin having compatibility with vinyl chloride resins which have never been used as the materials attaching importance to the external appearance such as internal finish materials due to occurrence of deformation, discoloration or the like of the molded products using vinyl chloride resins in the vicinity of hot water, and titanium oxide.

Desired vinyl chloride based resin compositions excellent in hot water resistance comprise 100 pts.wt. vinyl chloride resin; 10-80 pts.wt. copolymer resin to be obtained by copolymerizing 30-100 wt.% α-methylstyrene, 10-50 wt.% unsaturated nitrile and 0-30 wt.% N-aromatic maleimide; and 0.1-20 pts.wt. titanium oxide. Desired vinyl chloride resin moldings are obtained by melt molding of these vinyl chloride resin compositions.