Based　on　provincial　panel　date　of　China　for　the　period　2001-2014,　this　study　empirically　adopts　the　slacks-based　measure　of　directional　distance　function　model　and　spatial　Durbin　model　to　explore　the　impacts　of　environmental　regulation　and　its　spatial　spillover　effect　on　air　pollution　control.　The　results　show　that　the　increase　of　environmental　regulation　stringency　will　help　to　improve　air　pollution　control　efficiency　or　reduce　air　pollutant　emissions.　In　terms　of　spatial　effect,　evidence　has　been　found　to　support　environmental　regulation　has　significantly　spatial　spillover　effects.　Specifically,　the　increase　of　environmental　regulation　in　other　provinces　will　decrease　local　air　pollution　control　efficiency　or　increase　local　air　pollutant　emissions,　which　implies　that　there　is　strategic　interaction　of　environmental　regulation　among　local　governments.　Moreover,　the　results　of　the　time　interval　test　indicate　that　the　effects　of　environmental　regulation　on　air　pollution　control　have　improved　in　recent　years,　and　with　the　increase　of　environmental　regulation　stringency,　its　spatial　spillover　effects　have　increased.