The invention relates to an embedded Internet connection device for a community information system and a realization method of the embedded Internet connection device, and belongs to the technical field of information. The device adopts a form of daughter boards and a motherboard, comprises a motherboard, a main processor daughter board and a VGA (Video Graphics Adapter) daughter board, and has better hardware expansion and upgrade capabilities. The device uses a mouse, a keyboard and a liquid crystal display as input and output devices, the device is compact and lightweight and can be hung at the back of the display, the price is cheap, the performance is reliable, and the device meets basic Internet connection requirements of ordinary users. The device adopts an open source embedded Linux operating system, uses a Qt4 language design EMD (Embedded Desktop) system, is attractive and elegant, and is easy to operate. The realization method of the device comprises a one key recovery method and a normal system start-up method. When a system is normal, the system is started up by the normal system start-up method; and when the system crashes, the system is automatically restored to the original state by the one key recovery method.