The utility model relates to a vehicle notifying device of a cell phone incoming call. The vehicle notifying device of the cell phone incoming call includes a cell phone incoming-call indicator, a photoelectric coupler, a voice recording and playing module, a three-terminal voltage stabilizer, a third capacitor C 3, a switch K, a loudspeaker and a power source. The vehicle notifying device of the cell phone incoming call is formed through the connection among the cell phone incoming-call indicator, the photoelectric coupler, the voice recording and playing module, the three-terminal voltage stabilizer, the third capacitor C 3, the switch K, the loudspeaker and the power source, thereby realizing the fact that cell phone incoming-call signals can be captured timely in an environment full of traffic noises and a cell phone user can be notified timely. Therefore, a condition that an incoming call is missed is prevented.