Due to the reduction of attachment area of oyster seedlings reduced, the reduction of natural culture area of oyster and the invasion of typhoon, etc., the oyster prices were higher in recent years. The price of cultchless oyster is always higher than those of cultch oyster. But these oyster always met the problem of inconsistent condition index, especially low condition in the winter. Therefore, the present study is focused on the research and development of conditioning module of oyster factory. The protein and glycogen content did not decreased in the replacement of 50% microalgae by powdered pop meal. The production of pseudofaeces of is less in the 0.0625 and 0.125% than the other feeding group. And the former group had better feeding amount. The tragedy of less amount and more frequency feeding regime is better for less pseudofaeces and more feeding amount. There were no significant difference in the condition index among the feeding amount of 0.125,0.25,0.5,1 and 2 %. Although the condition index was significantly lower than the initial, but was higher than oyster reared outdoor. They had lower survival in the 1 and 2 % group due to the worse water quality.