Cosmos is a parallel network with chains supported by consensus such as tendermint. In cosmos ecosystem, each space can communicate, trade and operate with each other. Cosmos's vision is to break the barriers between blockchains, create a blockchain Internet and become a preferred platform for various practical use scenarios. This implementation is accompanied by the development of a series of system tools, including the communication between tendermint, Cosmos SDK, IBC, hub and zone, which is realized through IBC protocol. Go Ethereum adopted by Ethereum is a single-chip technology stack. Some upgrades to its characteristics and the improvement of customization are the earliest entry point of tendermint established in 2014. Tendermint BFT is a solution that packages the network layer and consensus layer of the blockchain. Developers only need to focus on the application layer without paying attention to the underlying protocol. This developer friendly design looks nothing new in today's public chain flooding. However, if this idea first appeared at the end of 2014, it will naturally understand the foresight of cosmos. In addition, the main advantage of tendermint consensus algorithm is that it has a safe and easy light customer end, which makes it an ideal tool for mobile phone and Internet of things use cases. Tendermint light passenger terminal only needs to keep consistent with the changes of the verification group, and then verify the pre submitted + in the latest block to determine the latest situation. In short, cross chain is not the whole of COMOS. Tendermint technology has also made great efforts to save development time. The attributes of tendermint BFT are applicable to public and private chains. Tendermint BFT only deals with the network and consensus of blockchain. Node propagation transactions and verifiers agree on a group of transactions to be attached to blockchain, which can process thousands of transactions per second. Cosmos is based on tendermi