Fume hood system and air curtain haveing t line nozzle of the same hood system

A fume hood system by which experiments are stably performed is provided, and a "T" line nozzle injection type air curtain of the hood system is provided. A fume hood system comprises: a housing(10) which has a box shape, and in which an experiment space is formed; a door(14) which is installed on the front of the housing such that the door is liftable and lowerable, and which partially opens the experiment space to flow indoor air in the experiment space; a blower embedded in an upper part of the housing to suck air containing harmful gases generated by experiments; an exhaust duct(20) exhausting the sucked harmful gas-containing air to the outside from the blower; and a "T" line injection type air curtain(22) which is installed on the top of the door within the housing, and which injects air flown in from the outside into the experiment space to adjust the amount of indoor air flown in.