TOS (ThingsOpreatingSystem) is a global intelligent Internet of things open protocol project based on block chain technology. It is a decentralized hierarchical block network technology based on SDAG for IoT industry. TOS wants to make a layered block network operating system in which transaction cost is free for ordinary trading and transaction cost is needed for high valued trading. This technology forms a layered DAG block network set for the entire network block, and automatically distributes the massive transaction data to each hierarchical block network, greatly reducing the data redundancy of the entire network block and at the same time it classify and store the data according to its values in the network system for better mining the high-value information and integrating artificial intelligence in the future. This will be the continuation of the next step in the development of blockchain technology, and it will be of historical significance to the blockchain.