To provide a space sterilization and deodorization system in which single chlorine-based gas generating apparatus can sterilize and deodorize a plurality of rooms and operation efficiency of the chlorine-based gas generating apparatus can be improved by controlling chlorine-based gas concentration in each room.SOLUTION: The space sterilization and deodorization system for sterilizing and deodorizing a plurality of spaces as objects to be sterilized and deodorized is provided that includes: a chlorine-based gas supply unit 1 generating and supplying a chlorine-based gas； and a duct 2 connected to the chlorine-based gas supply unit 1. The duct 2 is branched, the branched ducts are then connected to respective target spaces. A regulating valve 4 is provided at the branching point of the duct 2 and controlled by control means 10 in such a manner that the flow rate of the chlorine-based gas flowing to branched ducts ( a duct 21 and a distribution duct 22) is adjusted, so that the target space can be efficiently sterilized and deodorized.SELECTED DRAWING: Figure 1【課題】１つの塩素系ガス生成装置で複数の部屋を対象に除菌脱臭することができ、各部屋の塩素系ガス濃度を制御し、塩素系ガス生成装置の運転効率を高められる空間除菌脱臭システムを提供する。【解決手段】複数のエリアを除菌脱臭の対象とする空間除菌脱臭システムであって、塩素系ガスを生成し、供給する塩素系ガス供給装置１と、塩素系ガス供給装置１に接続されたダクト２を有し、ダクト２は分岐された後、それぞれ対象となるエリアに接続され、ダクト２の分岐箇所には、調整弁４を設け、制御手段１０によって、分岐後のダクト（ダクト２１、分配ダクト２２）に流入する塩素系ガスの分配量を調整するように調整弁４を制御するので、効率的に対象空間の除菌、脱臭を行うことができる。【選択図】図１
