The invention discloses an implement method of automatic configuration nodal parameter in an automatic exchange optical network system, comprising: starting the automatic exchange optical network system, detecting the network nodes and distributing a group of random data package for new network nodes which are not configurated with the nodal parameter. The automatic exchange optical network system broadcasts the random data package in total network, and selects the obtained random data package to configurate a router node for the smallest network node. The configuration router node distributes the nodal parameter for each network node according to the network parameter distributing strategy. According to the implement method of the invention, a configuration router node flow is added, thereby realizing automatic configuration of the nodal parameter in the automatic exchange optical network system, greatly advancing configuration efficiency of the nodal parameter, reducing error rate of the nodal parameter.