Abstract: Considering actuality of fluorine-containing textile finishing agents in China,a fluorine-containing textile finishing agent emulsion was prepared by core-shell emulsion polymerization and characterized by FT-IR and laser granularity analysis.The stability of fluorine-containing textile finishing agent emulsion was tested.The effects of cross-linking agent on oil-and water-repellency,and durable-washing properties of the fabric were studied;Air permeability and tearing strength of the treated fabric were analyzed.The results showed that decreasing the size of finishing agent emulsion improves the stability.The textiles had good oil-and water-repellency and washing fastness properties after finishing,and exhibited little change in air permeability and tearing strength.