HeFi is a platform that provides healthy aging services to solve the problems of aging society. HeFi builds a HealthCare data system by combining blockchain's Decentralized Identifier (DID) and NFT technology. HeFi aims to establish a P2X token Economy based on HeFi (HeFi Token) that can provide more specific and strong rewards to participants in HeFi by applying NFT, cryptocurrency, and blockchain technology. Whenever users of wearable devices or AI Speakers achieve missions with activities which have elements of game playing, they can be rewarded with HeFi tokens, and they can also get them by sharing data generated by wearable and AI Speaker. HeFi token obtained by those ways can be exchanged for other cryptocurrencies or legal currencies on the exchange where HeFi token is listed and can be used for various purposes.