The invention discloses a sharing foldable accompanying bed with a Bluetooth locking device and a sharing method thereof. The sharing foldable accompanying bed comprises a cabinet body, a foldable bedand a Bluetooth intelligent lock, wherein a bed tail frame of the foldable bed is hinged to the inner side of a back plate of the cabinet body; a decoration plate is hinged to a bed head frame of thefoldable bed, is folded and accommodated into the cabinet body, and forms a cabinet door; the Bluetooth intelligent lock is arranged on the decoration plate, and comprises a locking structure and a two-dimensional bar code which is matched with the locking structure; the two-dimensional bar code is arranged at the outer side of the decoration plate; a lock latch of the locking structure is of a telescopic structure; one section, near the Bluetooth intelligent lock, of the cabinet body is provided with a clamping groove; the lock latch can be clamped into the clamping groove, so as to limit the movement of the foldable bed; a two-dimensional code is scanned by a mobile terminal, the Bluetooth intelligent lock is unlocked, and the foldable bed is unfolded; after use, the foldable bed is accommodated, the Bluetooth intelligent locking is performed, and the mobile terminal stops charging. The sharing foldable accompanying bed has the advantages that the time of medical staff is shortened,and the sharing foldable accompanying bed can be freely used by the accompanying person, and be conveniently managed by an owner of the accompanying person.