The invention relates to a plug and play method of a power distribution network information exchange bus, wherein the power distribution network is up to the IEC 61968 standard. The plug and play method is characterized in that after the bus is started, the bus may access to a database specified by a configuration file so as to obtain the addresses and the name information of each adapter and each bus, and simultaneously, the bus obtains the subscription relationship of each adapter from the database and generates a publishing-subscribing authority list in an internal memory, and the publishing-subscribing authority list or one part of contents of the publishing-subscribing authority list is distributed to each bus and each adapter, and then a receiving party performs corresponding processing on the received publishing-subscribing authority list, thereby completing plug and play bonding with each adapter and other buses.