A wireless network apparatus capable of illumination includes a casing, a motherboard, a prompting unit, and a light emitting unit. The casing has a light permeable portion. The motherboard is disposed in the casing for serving a networking function. The prompting unit is disposed at the motherboard and electrically connected thereto for generating a prompting signal in accordance with a status of the networking function being performed by the motherboard. The light emitting unit is disposed on the motherboard or in the casing and corresponds in position to the light permeable portion. The light emitting unit is powered by the motherboard and configured to emit light passing through the light permeable portion, thereby serving a lighting function. Accordingly, the wireless network apparatus provides home illumination, increases the value-added, and boosts consumers' willingness to buy and install the wireless network apparatus.