A computer implemented method for recording a crash in an appliance is provided. The method includes the following steps: running a core process to perform a transaction, which will make the core process undergo at least one state sequentially, wherein each state includes at least one call stack; executing a supervisor process to generate a state record, to sequentially record all undergone states of the core process in the transaction; in response to a crash of the core process in the transaction, generating a fault record to record all call stacks in a latest state of the core process; generating a crash report according to the state record and the fault record.