Abstract: In order to get a better knitted coated fabric with flame retardancy, first of all, knitted fabric was finished by padding flame retardant, then coated with polyurethane(PU) which includes flame retardant. The optimum transfer coating process is obtained by orthogonal experiment ,the surface layer thickness of 0.1mm, the surface layer of drying temperature of 100 ℃, the surface layer of drying time of 1min, the bonding layer thickness of 0.1mm,the bonding layer drying temperature of 120 ℃, the bonding layer drying time of 2min. Knitted coated fabric with flame retardancy are manufactured by the optimum coating process, the fabric hidden burning time and continued burning time are 0 second, char length 10.5cm. Washing durability of coated fabric was tested through the washing test. After 20 tines washing, the fabric hidden burning time and continued burning time still are 0 second, char length 15.5cm. The results showed that the coated fabric has good flame retardancy and the washing durability.