Sample mixing instrument

The invention discloses a sample mixing instrument, and belongs to the technical field of sample mixing. The rotating mechanism is arranged on the rack, the rotating mechanism comprises a driving rotating part and a driven rotating part, the driving rotating part is connected with a driving part, and the driving rotating part and the driven rotating part are coaxially arranged; the vibration mechanism is arranged between the driving rotating piece and the driven rotating piece and comprises a main shaft and a vibration piece, the main shaft and the driving rotating piece are coaxially arranged, the main shaft can slide between the driving rotating piece and the driven rotating piece in the axial direction of the driving rotating piece, and the vibration piece is arranged on the main shaft; the vibrating piece drives the main shaft to vibrate axially along the driving rotating piece; the clamping mechanism is arranged on the vibration mechanism, the clamping mechanism is used for clamping a test tube, the rota