Abstract: The paper introduces the finishing process of polyester fabric with fluorochemical finishing agent via pad-dry-cure technology.The influence of the concentration of finishing agent,curing conditions,concentration of acetic acid,concentrations of isopropanol and cross-linking agent on the water-and oil-repellent of polyester fabric was investigated.The process conditions were optimized based on the water-and oil-repellent properties of the fabric after washing.The result indicated that the optimized finishing can impart all kinds of polyester fabric better water-and oil-repellency,and after 5 laundry cycles,the water repellency mark of the fabric is no less than 90 and oil-repellency is no less than grade 4.In addition,SEM is used to observe the change of surface morphology of the fabric before and after washing,the reason leading to change is explained theoretically.The discrepancy in water-and oil-repellent properties of fabric before and after washing is also proved.