A carrying bag includes a housing having a base wall and an upper wall, and the housing includes a cover panel foldable relative to the upper wall, a base plate is engaged in the housing, a support device is foldably attached to the base plate with a hinge device, and the support device is foldable relative to the base plate and the housing, and a display is attached to the support device and movable relative to the upper wall between an upwardly working position and a downwardly folded storing position. The housing includes a chamber for receiving a mobile device. An attachment is attached to the support device for engaging with and for supporting a mobile member.