Upgrading system suitable for multi-core module table management unit

The invention discloses an upgrading system suitable for a multi-core module table management unit. The upgrading system comprises a server, an upgrading module and a plurality of management units, the server is connected with the upgrading module; the upgrading module is connected with each management unit through a CAN bus; the server firstly sends a to-be-upgraded file and an upgrading command to the upgrading module according to the obtained management unit communication address and version information of each management unit and then sends the to-be-upgraded file and the upgrading command to each management unit through the upgrading module and the CAN bus, each management unit firstly analyzes the upgrading command and sends the analyzed upgrading command to the upgrading module; and then upgrading according to the analysis result and the to-be-upgraded file, and returning an upgrading result. By adopting the mode that the CAN bus is connected with the upgrading module and each management unit, the upgr