Luminous keyboard module and power-saving method thereof

A luminous keyboard module comprises a luminous keyboard and a control transmission module, wherein the control transmission module comprises a transmission unit, a judgment unit, a timing unit, a comparing unit and a processing unit; the transmission unit is used to perform signal transmission with the luminous keyboard and an input device; the judgment unit is used to judge whether the transmission unit receives the signals of the luminous keyboard and the input device; the timing unit is used to calculate the dead time of the luminous keyboard when the judgment unit judges that the transmission unit does not receives the signal of the luminous keyboard; the comparing unit is used to compare the dead time with a preset time and generate a comparison signal when the dead time is more than the preset time; and the processing unit is used to drive the luminous keyboard to enter a power saving mode according to the state of the input device, after receiving the comparison signal.