The parental edible medusa (Rhopilema esculenta) reared fromephpyra to sexual mature once needed for over three months. Chirocephalus naupliiwere used as the diet. The individual spawning activities continued for over onemonth The ratio of female to male spawners was 3:1. The hatching rate of fertilizedeggs was about 90%. Some seedling attachment facilities were installed after 15hours when they were appearence of planula larve. The planult larvae of the medusa were supplied as the food for the early stageof scyphistoma. Three days later they were fed with Chirocephalus nauplii. Thefeeding interval period for indoor overwintering Scyphistoma lengthened with thetemperature dropping down. The water was exchanged thoroughly every month. When the water temperature raised to 10℃ the same quantity of feed as thatused before winter was added. The scyphistoma began to release ephyra while thewater temperature reached about 12℃. The ephyra became juvenile medusa and wereready for stocking when the unbrella diameters attained to 0.5cm. Per unit waterarea could produce 90.000 seddlings/M³.