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In order to improve the utilization of yeast cells and reduce the other bacterial contamination, immobilized yeasts were used to ferment continuously. In this study, alginate was used as the embedding medium for immobilized yeast ADY. The results showed that: when the added immobilized ADY amount was 15%,the ethanol conversion rate was the highest, and in the other levels, it would be declined. The fermentation result of immobilized yeast ADY was superior to that of the same free, and the test difference reached significant level. Therefore, the test effect by use of embedding method to immobilized yeast was better, and the fermentation tests could be done multi-batch continuously.