The utility model relates to a container twistlock automatic unlocking device, including work platform, jack catch support, sharp impeller, driving system, control system, twistlock collecting box, still include unblock actuating mechanism. Artifical the not enough of lock inefficiency and security difference of plucking has been overcome to this device, has improved the operation security, and convenient to use is strong to the suitability of container twistlock, does benefit to the container harbour and realizes automaticly.