Human eggs are invaluable in the field of human assisted reproduction because of they are precise,scarce,personal and ethical. Due to the restriction of egg sources and the increased egg demands of medical research,egg supply is always not enough for medical treatments. To ease up the contradiction of egg supply and demand,some countries are exploring various supply models which can consistent with their own culture. Compared to egg-donation and egg-trade,egg-sharing is the ideal model for egg supplement,which is more in accordance with bioethical principles of beneficence and justice. At present,China has begun to practice the model of egg-sharing. However,the system construction is incompetent. We should learn more helpful experiences from foreign countries to build a perfect model for egg sharing.