A vehicle door structure comprising a sliding door and a swing door that are configured to open and close a door opening section formed at a vehicle body, the vehicle door structure comprising: a sliding door support unit configured to support the sliding door to enable opening and closing thereof; a swing door handle configured to perform an operation of opening the swing door; a door lock unit configured to lock the sliding door and the swing door when the sliding door is in a fully opened state; a manipulation control unit configured to disable a manipulation of the swing door handle when the swing door is in a fully closed state; and a lock detection unit configured to detect a locked state between the sliding door and the swing door by the door lock unit, wherein the sliding door support unit has a slide rail attached to the swing door and configured to slide the sliding door with respect to the swing door, and a guide body attached to the sliding door and configured to guide the sliding door to the slide rail upon sliding of the sliding door, characterized in that the door lock unit has a locking pin disposed at the guide body, a locking pin biasing member configured to bias the locking pin toward the swing door, and a fitting section formed at the slide rail, and locks the sliding door and the swing door by fitting the locking pin into the fitting section, the lock detection unit detects the locked state between the sliding door and the swing door by detecting the locking pin being fitted into the fitting section, and the manipulation control unit enables a manipulation of the swing door handle when the locked state between the sliding door and the swing door is detected by the lock detection unit. a sliding door support unit configured to support the sliding door to enable opening and closing thereof; a swing door handle configured to perform an operation of opening the swing door; a door lock unit configured to lock the sliding door and the swing door when the sliding door is in a fully opened state; a manipulation control unit configured to disable a manipulation of the swing door handle when the swing door is in a fully closed state; and a lock detection unit configured to detect a locked state between the sliding door and the swing door by the door lock unit, wherein the sliding door support unit has a slide rail attached to the swing door and configured to slide the sliding door with respect to the swing door, and a guide body attached to the sliding door and configured to guide the sliding door to the slide rail upon sliding of the sliding door, characterized in that the door lock unit has a locking pin disposed at the guide body, a locking pin biasing member configured to bias the locking pin toward the swing door, and a fitting section formed at the slide rail, and locks the sliding door and the swing door by fitting the locking pin into the fitting section, the lock detection unit detects the locked state between the sliding door and the swing door by detecting the locking pin being fitted into the fitting section, and the manipulation control unit enables a manipulation of the swing door handle when the locked state between the sliding door and the swing door is detected by the lock detection unit.