A wireless digital set-top box, comprising a microprocessor (1), a FLASH module (2), a SDRAM module (3), a 802.11 module (4), a network interface (5), a Modem module (6), a JTAG interface (7), a power supply module (8), a infrared interface (9), a HDMI module (10), an USB module (11), an audio interface (12), a video interface (13), a S terminal interface (14), a TUNER interface (15) and a system bus extension. The invention is integrated with an embedded operating system-uClinux, an ARM structure CPU hardware platform, a television receiving module, a family gateway module and a 802.11 wireless communication module, having advantages of low costs, convenient operation, capable of carrying out wireless communication among equipment, suitable for substituting or upgrading cable digital television set-top box and family gateway, avoiding operating difficulty for operating a plurality of digital equipment at the same time as a use convenience for family user.