Medical linear accelerator fault circuit board off-machine simulation test device

The invention relates to a medical linear accelerator fault circuit board off-machine simulation test device which comprises an electric signal generator, a fault circuit board interface component anda control computer, wherein the control computer, the electric signal generator and the fault circuit board interface component are successively connected; the fault circuit board interface componentis connected to the control computer; the control computer has a circuit function parameter database; the circuit function parameter database is a parameter database according to the normal operationof the medical linear accelerator; the control computer sends an electric signal the same as the that during the operation of the medical linear accelerator to the fault circuit board through the electric signal generator. The fault circuit board sends a feedback signal to the control computer via the fault circuit board interface, and the computer outputs a measurement result according to the comparison of a pulse signal