Abstract: The products issued by the Shenwei Medium-range Ensemble Prediction System include the ensemble mean of 500 hPa height fields, the probabilities of 850 hPa temperature anomalies, and probabilities of rainfall. The ensemble-mean of 500 hPa height fields has been used in the forecast of the Eurasia circulation pattern, the sandstorm in spring, the rain process, and the change tendency of the subtropical high in summer. The probabilities of 850 hPa temperature anomalies are very useful in the forecast of temperature change tendency and cold air processes. The probabilities of rainfall have been used by forecasters directly.