Preferably,the aqueous fluorocarbon resin emulsion is used as a film-forming substance of the exterior wall paint,and the hardness of the paint film is increased by filling with calcium carbonate powder,and finally a functional dissolving agent such as a dispersing agent,a wetting agent and a defoaming agent is prepared with a suitable amount of a dissolving agent.An exterior wall coating that has good stain resistance and excellent weather resistance and aging resistance.The effects of different kinds of water-based fluorocarbon emulsions on the performance of water-based fluorocarbon exterior wall coatings were investigated during the test.The properties of the paint films prepared by different types of water-based fluorocarbon emulsions were investigated one by one.The results show that although the fluorine content does not necessarily affect the performance of fluorocarbon exterior latex paint,the high fluorine content fluorocarbon coating products are significantly more resistant to staining and weathering,gloss and color retention,general latex paint is more excellent.