The invention provides a method for communication among business boards in distributed equipment. The method comprises steps of issuing interboard table items and an ACL; matching received messages by an incoming interface according to the ACL and obtaining corresponding execution motions; sending the messages to internet accesses of corresponding business boards according to the execution motions; each business board performing application processing of the message entering via the internet access and sending the message to a CPU of the corresponding business board according to a self interboard table item; and when a current business board does not find a next business board corresponding to the message according to the interboard table item, using a business board of a forwarding mode to find an outcoming interface for forwarding the message to the distributed equipment. The business boards process and forward the messages according to the interboard table items, and internal interboard channels are used for forwarding when the business boards forward the messages to next business boards, so that the problem that networking is complex is improved.