The invention relates to a protection circuit driven by insulated gate bipolar transistor (IGBT). It is composed of power supply, IGBT, a signal circuit driven by upper and lower bridges, light coupler, a control circuit with a switch triode, an amplifying circuit for driving signal, a protection circuit for detecting and adjusting the voltages between collector and emitter of IGBT. Said protection circuit includes a short circuit protection circuit, fault latching circuit and fault soft switch off circuit. When the voltage of collector-emitter of IGBT is abnormal, the voltage of insulated gate of IGBT is adjusted to lower than threshold voltage, by the operation of short circuit protection circuit as well as control and amplifying circuit. Thus the IGBT is cut-off and the close latching is realized by that fault latching circuit. It guarantees to close off IGBT before CPU receives the fault signal and closes off driving signal.