The study on chaotic synchronization began in the early 1990s.So far, the researches on chaotic synchronization have been studied intensively in some fields, such as laser dynamics[1], electric circuits[2], chemical reactions[3], secret communication [4] and neurdynamics[5].In these phenomenia of chaotic synchronization reported, much more reports show adequately in theory and experiment that there are some uncoupled neurons to deliver informations by mechanism of chaotic synchronization[6-9].But the mechaism of chaotic synchronization among uncoupled neurons is unclear.