The utility model relates to a national stringed instrument adjusting device which comprises an adjusting bracket which is capable of adjusting a music instrument skin, and an upper fine tuning device. The adjusting bracket which is capable of adjusting a music instrument skin is arranged in a musical instrument barrel and is fixed on a music instrument rod in the music instrument barrel, and the shape of the adjusting bracket can be a hexagon, an octagon or a round, which is determined by the shape of the music instrument barrel. A shock absorption edge sleeve is fixed at the front face of the adjusting bracket, and the adjusting bracket can do fore-and-aft movement on the music instrument rod by rotating an adjusting bolt. An upper fine tuning bracket is arranged at the upper part of the music instrument rod, and a music wire pressing piece, an adjusting hand wheel and a music instrument wire pillow are arranged on the upper fine tuning bracket. Because the adjusting bracket which is capable of adjusting the music instrument skin is additionally arranged on a traditional nationality stringed instrument, the degree of tightness of the music instrument skin can be adjusted, and then the tone color of the music instrument can reach the optimum effect. In addition, the upper fine tuning bracket is also additionally arranged on the traditional nationality stringed instrument, and the goal of adjusting the degree of the tone can be achieved by adjusting the degree of the tightness of the music wire.