Abstract: Based on one-dimensional unsteady flow model, the velocity field of airflow and the temperature field in subway are simulated by use of the continuity equation, the motion equation and the convection-diffusion equation. For subway stations with screen doors and those without screen doors, analog computation and comparisons concerning the energy consumption rates of air conditioners and the temperature fields of the wind in tunnels are also made. The station with screen door is analyzed, and some rational suggestions are put forward