Self-tunable compound bow

The present invention relates to a compound bow which enables self-tuning which includes a handle with a grip unit on the center; a bow body composed of a pair of winds joined to both ends of the handle; pulleys joined to rotary shafts formed on the rear ends of each wing to be rotated; upper and lower pulley assemblies including cams which are joined to first sides of each pulley; a bowstring of which both ends are wound on each pulley of the upper and lower pulley assemblies; and first and second cam cables of which the first ends are joined to each pulley assembly and the second ends are joined to the opposite pulley assembly and which are wound on the cams of each pulley assemblies by pulling the bowstring. A contact pin in contact with the first cam cable when the bowstring is joined to a joining hole formed on the pulley and pulled is formed on one of the pulley assemblies. An indicator which is in contact with the second cam cable and moved when the bowstring is pulled inside a guide hole formed on the pulley is formed on the other pulley assembly. The indicator is composed of a contact protrusion unit and a supporting unit which are joined to each other on both lateral surfaces of the guide hole. The contact protrusion unit and the supporting unit are joined to two joining member which are separated at a predetermined space from each other along the guide hole.