The utility model relates to a display tube circuit, in particular to a display tube shutdown bright spot elimination circuit. The utility model, which is intended to resolve the shortcomings of existing technology for the display tube bright spot elimination circuit of complicated structure, high cost and insufficient circuit reliability, discloses a display tube bright spot elimination circuit with simple structure. The utility model is characterized in that: the utility model is composed of an impulse generating circuit, a driving circuit connected to the display tube and an impulse coupling circuit. The impulse generating circuit is connected to the driving circuit via the impulse coupling circuit; the impulse coupling circuit is composed of a RC loop and a diode isolation circuit; the anode of the diode isolation circuit is connected to the impulse via the RC loop; the cathode of the diode isolation circuit is connected to the driving circuit. The utility model has the advantages of simple circuit structure, little number of components, low cost and high reliability.