Nitrate　salts　have　been　applied　as　heat　transfer　and　heat　storage　medium　in　the　Concentrating　Solar　Power　(CSP)　plants.　Corrosion　is　critical　to　the　long-time　safe　operation　of　the　CSP　system.　This　experimental　study　was　conducted　to　research　the　dynamic　corrosion　behaviors　of　316　L　stainless　steel　in　high-temperature　quaternary　nitrate　nitrite　mixture.　The　effects　of　corrosion　on　316　L　stainless　steel　were　investigated　under　the　varied　flow　rates　of　0.6　m/s,　1.3　m/s　and　2　m/s　with　565　degrees　C　constant　temperature　for　1000　h.　The　results　showed　that　oxidation　corrosion　occurred　in　316　L　stainless　steel　at　all　working　conditions.　The　dynamic　corrosion　curves　were　parabolic,　and　the　value　corrosion　weight　loss　(m(mass))　increased　with　the　increase　of　the　flow　rate.　Meantime,　when　the　products　flow　rates　were　0.6　m/s,　1.3　m/s　and　2　m/s,　the　values　of　m(mass)　were　3.6　mg　cm(-2),　3.77　mg　cm(-2)　and　4.36　mg　cm(-2).　The　values　of　corrosion　depth　(R-depths)　were　0.039　mm/a,　0.041　mm/a　and　0.048　mm/a,　respectively.　Besides,　the　corrosion　products　were　consisted　of　hematite　(Fe2O3),　magnetite　(Fe3O4),　trace　amounts　of　MgFe2O4　and　NaFeO2　with　the　structure　of　lamellar.　Furthermore,　the　corrosion　products　gradually　transformed　into　FeCr2O4　with　structures　of　dense　and　massive,　and　the　increase　of　the　flow　rate　deepened　the　degree　of　corrosion,　but　it　had　little　effect　on　the　types　of　corrosion　products.