In order to collect more data of intensive aquaculture of Cynoglossus semilaevis, setting up two aquaculture modes of open flow through and recirculating aquaculture system, adult fish[(0.640±0.063)kg]in rapid growth period were observed, the index of growth and quality in muscles were detected.The experiment continued 7 months and the results were as follows:1)The survival rate of C.semilaevis in recirculating aquaculture and open flow through mode was 79.89% and 90.38%, weight gain rate was 0.154 7 and 0.110 9 kg/month, fatness was 0.920 and 0.838, growth hormone was 2.812 and 2.706 μg/L, respectively.There were respectively 13.13%, 39.5%, 9.8% and 3.92% higher in survival, weight gain, fatness and growth hormone of C.semilaevis in recirculating aquaculture mode than those in open flow through mode.2)Comparing two kinds of aquaculture models, open flow through mode has obvious superiority in crude protein, amino acid and PUFA, while recirculating mode has obvious superiority in crude fat and MUFA, these were respectively 41.732% and 16.912% higher than those in open flow through mode, which means recirculating aquaculture mode was more suitable for C.semilaevis's fattening.This study showed that C.semilaevis has a good adaptability in recirculating aquaculture mode, the growth and quality in muscles were all in a better condition, also showed that recirculating aquaculture mode can greatly develop the culture capacity of C.semilaevis.This was a preponderant culture mode for intensive culture of C.semilaevis.