The invention relates to the field of flow message processing of EOC local side equipment and especially relates to a method for avoiding watchdog restarting caused by CPU exhausting. Aiming at the problems existing in the prior art, the invention provides the method for avoiding the watchdog restarting caused by the CPU exhausting, wherein a kernel transmission module is interacted with a watchdog kernel program, so that the problems appearing in previous scenes can be solved very well. By the technical manner provided by the invention, the kernel transmission module will enter a detection state when a user mode watchdog program fails to feed a watchdog normally, number of messages is counted during a detection period, a system will enter the state that a CPU is exhausted by kernel transmission if the message number exceeds a defined threshold value, the kernel transmission module will take the place of the user mode watchdog program to execute kernel watchdog feeding, and thus the watchdog restarting is avoided. If the message number does not exceed the defined threshold value, the state that the CPU is exhausted by the transmission will not be started, the system will be deemed to have an abnormal problem, and the system will thus be restarted by the watchdog.