A usage of an extract of banana peel for boosting immunity of shrimps is disclosed. The extract is applied to a shrimp for boosting immunity thereof. The extract is manufactured by a method which comprises: providing a sample of banana peel, extracting the sample of banana peel with water in a weight-volume of 1: 5-1: 10 at 90℃ for 5 minutes to obtain an extracting liquid and condensing the extracting liquid to obtain the extract.一種香蕉皮萃取物用於製備提升蝦類免疫力藥物之用途,係將該香蕉皮萃取物投予一蝦體,以增強該蝦體之免疫力,其中,該香蕉皮萃取物之製備方法係包含:提供一香蕉皮;將該香蕉皮以重量體積比為1:5~1:10之比例與水混合,並於90℃下進行萃取5分鐘,以獲得一香蕉皮萃取液;及將該香蕉皮萃取液進行濃縮,以獲得該香蕉皮萃取物。
