Abrupt　air　pollution　accidents　can　endanger　people＇s　health　and　destroy　the　local　ecological　environment.　The　appropriate　emergency　response　can　minimize　the　harmful　effects　of　accidents　and　protect　people＇s　lives　and　property.　This　paper　provides　an　overview　of　the　key　emergency　response　technologies　for　abrupt　air　pollution　accidents　around　the　globe　with　emphasis　on　the　major　achievements　that　China　has　obtained　in　recent　years.　With　decades　of　effort,　China　has　made　significant　progress　in　emergency　monitoring　technologies　and　equipment,　source　estimation　technologies,　pollutant　dispersion　simulation　technologies　and　others.　Many　effective　domestic　emergency　monitoring　instruments　(e.g.,　portable　DOAS/FT-IR　systems,　portable　FID/PID　systems,　portable　GC-MS　systems,　scanning　imaging　remote　sensing　systems,　and　emergency　monitoring　vehicles)　had　been　developed　which　can　meet　the　demands　for　routine　emergency　response　activities.　A　monitoring　layout　technique　combining　air　dispersion　simulation,　fuzzy　comprehensive　evaluation,　and　a　post-optimality　analysis　was　proposed　to　identify　the　optimal　monitoring　layout　scheme　under　the　constraints　of　limited　monitoring　resources.　Multiple　source　estimation　technologies,　including　the　forward　method　and　the　inversion　method,　have　been　established　and　evaluated　under　various　scenarios.　Multi-scale　dynamic　pollution　dispersion　simulation　systems　with　high　temporal　and　spatial　resolution　were　further　developed.　A　comprehensive　emergency　response　platform　integrating　database　support,　source　estimation,　monitoring　schemes,　fast　monitoring　of　pollutants,　pollution　predictions　and　risk　assessment　was　developed　based　on　the　technical　idea　of　＂source　identification　-　model　simulation　-　environmental　monitoring＂　dynamic　interactive　feedback.　It　is　expected　that　the　emergency　response　capability　for　abrupt　air　pollution　accidents　will　gradually　improve　in　China.　(c)　2022　The　Research　Center　for　Eco-Environmental　Sciences,　Chinese　Academy　of　Sciences.　Published　by　Elsevier　B.V.