Abstract: The present invention relates to a smart lock structure and an operating method thereof. The smart lock structure comprises a key hole for access keys, an interrogating device for using radio frequency technology to communicate with a mobile device and accept access requests from the mobile device to unlock the smart key structure, and a lock mechanism in response to interaction between the key hole and the access keys and communication between the interrogating device and the mobile device for unlocking the smart lock structure and gaining access thereof. The smart lock structure further comprises a falling proof device equipped beside the interrogating device to prevent falling of the mobile device. An operating method is also provided for normal operation and/or configuration of the smart lock structure.