Care Coin is a functional token in the ecosystem. It can effectively utilize medical and health data and manage health information in a decentralized manner on the blockchain. Through the circulation of tokens, the ecosystem encourages everyone to understand and pursue their own health. It can also reduce the cost of tailor-made medical services by accumulating a large amount of case data, thereby preventing diseases in advance. Individuals can also obtain Care Coins by providing health data, and use these Care Coins to enjoy high value-added medical services, thus forming a virtuous circle. In this cycle, they invest their data in future medical services and enjoy the fruits of it.