Double-bass Chinese fiddle with adjustable fingerboard

The utility model discloses a double-bass Chinese fiddle with an adjustable fingerboard. The double-bass Chinese fiddle comprises a fiddle rod, a tuning peg arranged at the upper end of the fiddle rod, a fiddle cylinder fixed at the lower end of the fiddle rod, a fiddle string connected between the tuning peg and the fiddle cylinder, and the fingerboard arranged between the fiddle string and the fiddle rod. A fixed support and an adjusting support are oppositely fixed on the instrument rod up and down, the upper end of the fingerboard is hinged to the fixed support, the adjusting support comprises a first screw rod, a second screw rod and a threaded sleeve, the first screw rod is fixed at the lower end of the fingerboard, the second screw rod is fixed on the instrument rod, and the threaded sleeve is fixed on the upper end of the fingerboard. The first screw rod and the second screw rod are coaxially arranged, the rotating direction of the first screw rod is opposite to that of the second ...