Electronic device and support device thereof

The invention discloses a support device which is used for supporting a display device. The support device comprises a supporting mechanism detachably connected to the display device in a pivotal mode and a seat body connected to the end, away from the display device, of the supporting mechanism in a pivotal mode. A host module of an electronic device is arranged in the seat body, the host module of the support device can be detachably contained in the seat body, and therefore the host module can be conveniently upgraded and updated. The invention further relates to the electronic device provided with the support device.