The utility model discloses a reverse power transmission warning device for a 10KV power distribution station, which is characterized in that an induction electrode is arranged on a detected cable andsends a detected voltage signal to a voltage detection loop; a time-base integrated circuit is arranged in the voltage detection loop, and the time-base integrated circuit receives and processes thevoltage signal and then sends a control signal to the control loop; a second integrated circuit is arranged in the control loop, and the second integrated circuit receives the control signal sent by the control loop, converts the control signal into an alarm trigger signal and sends the alarm trigger signal to the buzzer driving loop; and an audio power amplification integrated circuit is arrangedin the buzzer driving loop, the audio power amplification integrated circuit receives the alarm trigger signal, amplifies the alarm trigger signal and then sends an alarm execution signal to a buzzer, and the buzzer receives the alarm execution signal and then sends an alarm signal. According to the utility model, on-site personnel can be reminded to send electricity through sound alarm, so thatthe risk of electric shock of the on-site personnel is greatly avoided.