Interrupt monitoring system and method

The invention relates to an interrupt monitoring system and method.The system comprises an interrupt request signal capturing module, an interrupt clearing signal capturing module and a timer, the interrupt request signal capturing module captures an interrupt request signal, updates an interrupt request queue according to the interrupt request signal, and sends the interrupt request queue to the timer; when the interrupt request signal has the highest priority in the updated interrupt request queue, a timing starting signal is sent to a timer, and the timer starts to count; the interrupt clearing signal capturing module captures an interrupt clearing signal, updates an interrupt request queue according to the interrupt clearing signal and sends a timing stop signal to the timer, the timer stops counting, the counting value of the timer between counting starting and counting stopping is calculated to obtain interrupt processing time, and when the interrupt processing time exceeds a preset threshold value, the