The present invention relates to a thin karaoke machine, in which a display device, an amplifier and a karaoke machine are integrated into a single body. The thin karaoke system includes a front cover having an opening formed in a center thereof. A back cover is bent backwards to form an inner space in combination with the front cover, and has a plurality of heat radiation holes. A display panel is arranged on a back surface of the front cover and adapted to form a display part on a front surface. A display board is arranged on a first portion of the back surface of the display panel and has a plurality of electronic parts and PCBs. A karaoke board is arranged on a second portion of the back surface of the display panel and has a plurality of electronic parts and PCBs.