Abstract: In this study, we developed the experiment of parent oysters which had different population density to promote maturity using outdoor concrete ponds. By intensive culture about 30 days, we found that 20-50 per cubic metre is better than others.Shady stimulation, temperature, algae solution, running water and opposite sex product were used to induce gametes releasing. The results indicates:shady stimulation 1 h + temperature stimulation + algae solution stimulation 1 h is better than other methods.