Abstract
In order to know the behavior of the customer in the concorse, we surveyed the Seoul Station from 8:00 am to 7:00 pm on a Sunday in August. The contents of this survey are 1. number of customers 2. distribution of customers 3. staying of customers 4. service of the ticket 5. number of customers at the restaurant 6. walking speed. And we found some differences of the architectural planning from Japanese Station, and found some problemes of the planning at the concorse in Seoul Station.