The invention toxic gas filtering relates to a device, in particular an upper filtered water supply chamber (2) and the lower filter chamber 3 is separated formed body (1) and; also a number consisting of the filtrate bag secured to, the filtered water supply chamber (2) (21 ) and; operating plate having a plurality of break pin 24 which, breakage of the filtrate bag (23);, a certain amount of the filtered water 22 is stored in the filtered water pocket seating also (with the filtered water pocket 23 to be kept in 21) 25 and;, filter chamber (3) as the configuration to the inside of the installation a number of filters through to the filtrate should pocket seat 21 and the injection port 31 of the upper filtering water supply chamber (2) 32, and;, the filter installation also filters 33 and consisting, respectively in (32); a suction fan 35 and to be installed, the filter chamber (3) inlet opening (34) on one side;, outlet 36 formed in the filter chamber (3), the other side a;, is configured, and enabling rapid filtration of toxic gases caused by a fire of a number of trapping filter is safe evacuation of the people inside the facility can be guaranteed as much as possible So as to feature a zoom minimize casualties.