Said invention is bidirectional wireless groups control method and device. It contains at least one supervisor device and plurality node device constituting network connect through specifically communication standard protocol, Each node device periodically exchanges documentation with supervisor device, supervisor device periodically updating data base, When node device not exchange documentation in. overtime, then respectively generating warning message in node device miss connection with supervisor in order to group control, in addition said supervisor device and node and node device can respectively operate in one-to-many or many-many mode. |