With the appearance of Bitcoin, the blockchain technology behind it has attracted attention from banks, companies, and entrepreneurs from different fields. Many new blockchain technology related projects and companies are started in financial service and others , such as data storage, supply chain, internet of things (IoT) and copyright protection as the valuable features including decentralization, transparency, security, and immutability. The work of blockchain technology can be used to reduce the costs associated with making decision and improve the efficiency of implementation by means of decentralized autonomous organizations (DAOs) which are the products of decentralization management. This paper is to analyze the pros and cons of decentralization management based on blockchain technology with an empirical study of blockchain projects and companies in different industries for a better understanding of decentralization management, and find better ways of decentralization management in blockchain projects and managing decentralized autonomous organizations.