An electronic guitar comprising a case (1), a keyboard (2), a sound synthesis electronic assembly (3), and an output line (4), characterized in that the keyboard (2) is divided into an upper keyboard (2-1) disposed on the neck (1-1) and a lower keyboard (2-2) disposed on the body (1-2); the upper and lower keyboards constitute a complex array; when a key on the upper keyboard and a key on the lower keyboard are pressed, a predetermined note is generated by the sound synthesis electronic assembly (3) and can be output to a karaoke CD player. It is possible to play this guitar while singing the karaoke, which is more pleasant. This guitar has novel and simple structure and is sure to be welcome.