The trend of the usage of the double-skin facade structure in buildings as part of the effort of building a Green Building is rising. Despite every positive effect towards conserving energy and increasing comfort for the occupant of buildings, facade tends to increase the risk of fire in buildings, therefore an active fire protection tools such as water spray is needed. This paper to model review several problems around the Fire Safety of the usage of Facade in buildings, such as the effect of water spraying into the facade cavity to control the spread of fire and smoke in that particular area and to identify the temperature distribution both in the cavity and in the room by modeling the phenomenon in Fire Dynamic Simulator software. The simulation was conducted in two scenario which were simulation without (scenario A) and with water (scenario B) with water spray density of 4,89 L/minute.m2. Based on the modelling result, the authors found out that spraying water into the facade cavity could inhibit the spread of smoke and fire throughout the facade cavity to not reach the level above room height. It also decreased the temperature in the facade cavity. However, this phenomenon is also accompanied by increasing temperature inside the room.