Method and device for monitoring and diagnosing running state of processor

The invention provides a method for monitoring and diagnosing the running state of a processor, a main processor and a coprocessor are heterogeneous, and the method comprises the following steps: reading two self-checking sequences generated by the coprocessor through the main processor and performing built-in self-checking calculation of a double-self-checking polynomial according to the two self-checking sequences to obtain a first calculation result; carrying out error detection and error correction data verification on the two self-inspection sequences generated by the coprocessor, and carrying out built-in self-inspection calculation of a double-self-inspection polynomial by the main processor after verification is passed, so that a second calculation result is obtained; and comparing the first calculation result with the second calculation result, and if the inconsistency of the first calculation result and the second calculation result exceeds a preset number of times, judging that the operation of the