There are differences in efficiency when pedestrian flows with various directions pass through the bottleneck of a subway in different manners,and the mechanisms of congestion at the bottleneck are distinct as well.The weaving motion of pedestrian flows with various directions in subways is simplified into two crowds with different ODs passing through the bottleneck which connects two parallel channels.The lattice gas model is improved by introducing the floor field so that it is suitable for the descriptio...