As for Flame retardant Viscose Fiber (FR), Flame-retardant fabric with fire-retardant properties is widely used in industrial products. The flame-retardant property of textiles can be obtained by two methods: First, for the finishing of flame-retardant textiles, the defect is that the flame retardant is weakly bonded to the textile, and the flame-retardant property will gradually decrease with the increase of the service life and washing times; second, the flame-retardant fiber is synthesized first, and then woven into the flame-retardant textile. Then, its flame-retardant property can be retained for a long time.