［Objective/Significance］Smart coating is a coating that responds to changes in the external environment in a controllable manner，providing more added value to the coating.［Analysis/ Discussion/Progress］Summarized the common types of smart coatings based on functional fillers，includingnanometer type，reactive type，load type and composite type. Function mechanism and structural characteristics of each type were described. Preparation techniques including coating preparation technologybased on functional filler surface modification，layer by layer self-assembly technology，sol-gel technologyand electrophoresis deposition technology were also introduced. In final，application area of smart coatingbased on functional fillers were introduced.［Conclusion/Prospect］The smart coating based on functionalfillers would be developed in the direction of low cost and multifunction.