As the concept of energy internet develops rapidly, the top-level design in different areas of energy internet has become one of the important tasks among energy field research. The discussion aiming at the transaction characteristics and business management modes of energy internet has been led to economical and technical fields of energy economics. Based on the idea that energy internet consists of multi-level systems, the concept of EIBM (energy internet based microgrid) has been proposed. This paper reviews the basic frame of EIBM, and proposes its transaction characteristics and business management modes. Distribution company, individual investors, sub-microgrids are the three main parts in EIBM operation, and their roles, rights and responsibilities are analized specifically in operation mode of EIBM. Operation principle, government role and advantages of EIBM are discussed respectively in detail. The suggestions on EIBM business management mode and operation mode are helpful to the design and construction of energy internet.