A union fabric comprising 6 to 60% by weight of a polyester fiber (A), 35 to 85% by weight of a halogen-containing fiber (B), and 5 to 55% by weight of a cellulose fiber (C) in which fabric the warp comprises weaving yarn containing the polyester fiber and the weft comprises flameproof chenille yarn and other weaving yarn, with the chenille yarn containing 10 to 70% by weight of halogen and 1 to 35% by weight of a flame retardant consisting of a metal compound, and in which fabric the content of the warp-constituting weaving yarn containing the polyester fiber is 20 to 40% by weight and those of the weft-constituting flameproof chenille yarn and the weft-constituting other weaving yarn are 35 to 70% by weight and 10 to 45% by weight respectively. This union fabric is excellent in design, texture, comfortableness in use.