The complex structure of the airport terminal building poses a threat to the life and property of people in case of fire. In order to visualize the impact of smoke on evacuation in different locations in the terminal building, a fire model was developed for the arrival hall and mezzanine passageway of the terminal building to analyze the temperature, CO concentration and light reduction coefficient of smoke at each key location under three different fire sources. Evacuation simulations were conducted for the arrival area of the terminal building to analyze the evacuation situation of each key location under different fire sources. The results show that among the different types of fires in the terminal building, there are areas where both the mezzanine passageway and the arrival hall are not safely evacuated in case of fire in the baggage carousel area.Smoke will fill the whole mezzanine passageway in case of fire in the mezzanine passageway, which makes evacuation of people dangerous.The stores in the arrival hall can be safely evacuated in case of fire. Under the existing building structure of the terminal building, the arrival gates can be opened to shorten the evacuation time effectively.