Decade advances of sodium azide (2011-2022) have been summarized via mechanisms and target products. Sodium azide is commonly used as a nucleophile (N-3(-)) or radical source (center dot N-3) in three-component reactions. It's reactions with alkenes, alkynes, R-X (X=F, Cl, Br, I, OTs, B(OH)(2), BF3K, I+ArO-Tf, N2+O-SO3-SiO2) and other electrophiles will be discussed.