The forecast of a container traffic has been very important for terminal plan and development. Generally, statistic methods, such as regression analysis, ARIMA, have been much used for traffic forecasting. Recent research activities in forecasting with artificial neural networks(ANNs) suggest that ANNs can be a promising alternative to the traditional linear methods. Time series data has trend and seasonality. In this paper, a ANNs methodology that make a consideration of trend and seasonal. The result with terminal traffic data indicate that effectiveness can differ according to the characteristics of terminals.