The utility model discloses a direct current and alternating current circuit of a power distribution terminal power supply. The direct current and alternating current circuit comprises an AC power supply, a storage battery box, an AC socket, a socket and a Zener diode set. The AC power supply is connected in parallel with the AC socket and then is connected with the AC input terminal of the socket, the DC input terminal of the socket is connected with the DC input terminal of the storage battery box, the output terminal of the socket is connected in series with the positive electrode of the Zener diode set, and the negative electrode of the Zener diode set is the output terminal of the power distribution terminal power supply. According to the utility model, the direct current and the alternating current of the power distribution terminal power supply share a circuit, wires in the circuit are reduced, the direct current and alternating current circuit is easy to install and debug, and phenomena that the wires are tedious and messy are avoided.