The invention relates to the field of communications, and more particularly relates to a method of each node in a wireless Ad Hoc network (also called a mobile peer to peer network, a wireless ad hoc network or the like) for managing interactive nodes on the surrounding. Two groups are established on the node: one is a neighbor people group, and the other is a private group. The neighbor people group is used for interacting with undetermined nodes on the surrounding, and the private group is used for interacting with determined people. Only one neighbor people group can be established on the node, but a plurality of private groups can be established. Moreover, construction method, use and properties of the two groups are introduced, and the two groups are managed to communicate with the nodes on the surrounding.