A system for controlling an airbag may include: an accident information collector configured to collect accident information and divide an entire road into a plurality of sections; an accident information analyzer configured to generate statistical information for each section by analyzing the accident information; a threshold value calculator configured to calculate a threshold value for each section, wherein the threshold value is a reference for inflating the airbag; and a inflation controller configured to determine whether to inflate the airbag based on the threshold value for each section.