Provided is a packaging box. The packaging box includes a first box body including a first accommodating part having a first accommodating cavity and a first opening communicating with the first accommodating cavity in a first direction; a connection assembly including a pair of connecting plates that are distributed opposite to each other on two sides of the first box body in a second direction, where the second direction intersects with the first direction; a second box body connected to one plate of the pair of connecting plates and having a second accommodation cavity; and a third box body connected to the other plate of the pair of connecting plates and having a third accommodation cavity, where the packaging box is configured to switch between a first state and a second state to close or open the first opening.

Disclosed is a storage device, including a first protective shell and a second protective shell for enclosing a peripheral side of an object that needs to be stored, and a locking member and an auxiliary unlocking member. The auxiliary unlocking member is configured to move along a shell surface of the first protective shell or move inside and outside towards the first protective shell to resist a locking force of the locking member. The locking member which can meet the locking and unlocking requirements of two protective shells cooperated with the auxiliary unlocking member which can adjust the locking force or locking state between two protective shells to reduce the difficulty of unlocking two protective shells. Therefore, the storage device can be used to reasonably and effectively store and protect the earphone charging compartment, or other products that are small in size and have a smooth and rounded appearance.

Disclosed is a storage device, including a first protective shell and a second protective shell for enclosing a peripheral side of an object that needs to be stored, and a locking member and an auxiliary unlocking member. The auxiliary unlocking member is configured to move along a shell surface of the first protective shell or move inside and outside towards the first protective shell to resist a locking force of the locking member. The locking member which can meet the locking and unlocking requirements of two protective shells cooperated with the auxiliary unlocking member which can adjust the locking force or locking state between two protective shells to reduce the difficulty of unlocking two protective shells. Therefore, the storage device can be used to reasonably and effectively store and protect the earphone charging compartment, or other products that are small in size and have a smooth and rounded appearance.