Vehicle microphone status detecting circuit

The utility model provides a vehicle microphone status detecting circuit including a voltage stabilizing circuit whose input terminal is connected with a power terminal and whose output terminal is connected with a microphone connecting terminal; a voltage dividing circuit whose input terminal is connected to the output terminal of the voltage stabilizing terminal and a microphone signal input positive terminal and whose output terminal is connected with a detection signal output terminal. A microphone signal input negative terminal is in ground connection. Power voltage of the power terminal is stabilized through the voltage stabilizing circuit and is then divided by the voltage dividing circuit. Working voltage of a microphone is obtained at the output terminal of the voltage stabilizing circuit. Detection signals are obtained at the output terminal of the voltage dividing circuit. The vehicle microphone status detecting circuit can detect an open circuit state, an short circuit state and a normal working state of the microphone and is simple in structure.