The invention provides a method and a system for repairing a damaged data table of a wave recording device, the automatic backup module in the system backs up the correct configuration data and the fixed value data of the recording wave, before accessing the configuration data and the fixed value data, the automatic recovery module is invoked first, the automatic recovery module detects whether the current configuration and fixed value data table is damaged or not. If there is any damage, the damaged data table file is backed up for later analysis conveniently, and then the damaged data tableis restored by using the backed-up correct data, so as to ensure that the wave recorder can obtain the correct data. The invention solves the problem that the data table of the wave recording deviceis damaged and causes the device to be unable to run normally by using the automatic backup and automatic restore method, greatly reduces the probability of wrong judgment and wrong judgment of the wave recording device due to the data error, and improves the robustness of the wave recording device.