An information distribution method for sending similar information from a sending node to all of receiving nodes in a given state in a dense wireless network. The sending node sends, only one time, information including status data directly to all of receiving nodes in an area where communication with the sending node is possible, not via a node other than the respective receiving nodes. Thereafter, the sending node determines whether or not any record corresponding to a receiving node to which the information should be sent is left in a distribution list. Only when it is determined that any record corresponding to a receiving node is left in the distribution list, the sending node sends information similar in content to the information sent in the directly sending step to the receiving node corresponding to the record left in the distribution list by using a unicast protocol.