PURPOSE: A fire fighting cooler system for extinguishing building fire is provided, which prevents fire from spreading to a neighboring building and secures a fire suppression route. CONSTITUTION: A fire fighting cooler system for extinguishing building fire comprises: an injection body(20) which is inserted into a hole formed in a fixed body(10) and in which a fire-extinguishing water passage is formed; and a fixing member(25) which is combined with an inner end exposed to an indoor place of the injection body and supports the injection body to be fixed the hole of the fixed body.
