The invention relates to a lock mutually-unlocking-rate full-automatic detection recorder based on chain transmission, and is to provide the detection recorder, which has the characteristics of full-automatic detection and continuous working and the like, and can improve work efficiency of lock detection. The technical scheme is characterized in that the lock mutually-unlocking-rate full-automatic detection recorder based on chain transmission comprises a key transmission device, an unlocking device and a lock cylinder transmission device; and the key transmission device comprises a key aperture disk for regularly storing keys, a key upper and lower clamping conveying mechanism arranged above the key aperture disk and for taking the keys out of the key aperture disk conveniently, and a key 90-degree rotating mechanism for transmitting the keys in the key upper and lower clamping conveying mechanism to the unlocking device.