Abstract: Scoured and bleached jute fabrics were phosphorylated by treating with urea-phosphoric acid salt solution under an optimum condition of concentration, pH, liquor pick up and curing. The samples were rephosphorylated and again cured under same conditions and were treated with the solution of antimony salt and zirconium salt together, neutralized and finally subjected to washing treatment. The treated jute fabric was tested for flame retardancy by standard method and was found to be significantly flame retardant with good fastness to washing.