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The traditional surface manual meteorological observations are gradually replaced by the automatic observation systems, but the electronic equipments of Automatic Weather Stations (AWS) are easily be influenced by thunders and lightning electromagnetic pulses，leading to equipment damage, operation interruption, observation data missing. It is necessary for observers to master the technical means of remedying damaged or missing data induced by lightning strikes to ensure data integrity. The causes and countermeasures of AWS data missing are discussed, with the emphasis on the processing of routine observation data, hourly upload files, daily and monthly extreme value data, missing data, etc.