Cardano is considered the third generation blockchain. Bitcoin is the first generation blockchain, Ethereum is the second generation. Ethereum is the leading technology in the blockchain 2.0 generation, so it is very rudimentary. At present, Ethereum must rely on the management system to upgrade and expand. For blockchain 3.0 like Cardano, there is the advantage of self-awareness. Cardano ADA can detect the shortcomings and difficulties of previous projects in order to develop better.