The purpose of this experiment is to develop an pre-market rearing ,depuration systemand optimal storage condition for oysters to produce excellent taiwan oyster that couldbe enhance global competition of oyster in Taiwan. This study examines the effects ofbivalve short-term stock rearing on the growth of soft inside their shell. Theexperiment oysters are reared in tank with different diets. The oysters are feed ondifferent diets to compare their somatic composition and taste, unsaturated fatty acid,taurine. Bacterial flora and coliform in the oysters soft be counted by many interval ofexperiment periodthat the oyster rear in continuously-flowing seawater for 24 hours without any food issupplied. The flowing seawater be filtered to 1 um filters and sterilized by different dosesozone .The change in Biochemical analyses,freshness quality,sanitary bacterial and totalbacterial in oyster meat during storage from 5 ℃ to 30℃.