Inflaming retarding working solution and inflaming retarding finishing method of pure cotton fabric and/or cotton-polyester blended fabric

The invention provides an inflaming retarding working solution and an inflaming retarding finishing method of a pure cotton fabric and/or a cotton-polyester blended fabric by adopting the inflaming retarding working solution. The inflaming retarding working solution comprises the following components: a fire retardant, a cross-linking agent and the balance of water, wherein the concentration range of the fire retardant in the inflaming retarding working solution is 200g/L-600g/L, and the concentration range of the cross-linking agent is 30g/L-100g/L. The pure cotton fabric or the cotton-polyester blended fabric obtained by the inflaming retarding working solution and the finishing method has good inflaming retarding effect and washability; after the cotton-polyester blended fabric is tested by GB/T5455-1997, the continued combustion and smoldering time of the cotton-polyester blended fabric is less than 5 seconds after washing for 30 times, the damaged length is smaller than 15cm, and the cotton-polyester blended fabric can reach grade B1 according to GB/T17591-2006 Inflaming Retarding Fabric Standards; and the inflaming retarding working solution and the finishing method can be used for carrying out the inflaming retarding finishing on fabrics used for clothes, tents, decorative fabrics and fabrics for vehicles.