A flashing lighting module includes: a base, a light guide unit, and a control circuit. The light guide unit includes at least two light-transmitting plates, each of which has an end forming a fixing section. The fixing sections are respectively received in corresponding mounting holes formed in the base and each includes a light incident surface at the side thereof opposite to the light-transmitting plate. The control circuit includes two light-emitting elements respectively corresponding to the light-transmitting plates and is connectable to a power supply for driving the two light-emitting elements to get lightening and darkening in sequence. As such, when a power supply is conducted on, each of the light-emitting elements gives off light transmitting to the interiors of the light-transmitting plates to make each of the light-transmitting plates show an effect of flashing in response to the lightening and darkening of the corresponding one of the light-emitting elements.