An upright hydraulic fodder mixing machine, comprising an outer tub body (1), an inner tub body (2), a mixing device and a power device. An upper end of the outer tub body (1) has a cylindrical shape and a lower end thereof has a conical shape. The inner tub body (2) is located inside the outer tub body (1), the power device is located above the outer tub body (1), and the mixing device is movably located inside the inner tub body (2). The power device comprises a motor (3), a connecting rod (4) and a hydraulic device (5), an output terminal of the hydraulic device (5) being connected to the mixing device by means of the connecting rod (4) and an output terminal of the motor (3) being connected to the mixing device. The upper end of the outer tub body (1) is provided with a baffle (6), the baffle (6) having an annular rail (7) thereon. The upper end of the mixing device is movably located inside the annular rail (7). The mixing machine drives the connecting rod by means of the hydraulic device so as to drive an auger to take an annular movement during the process of mixing in the inner tub body, increasing the mixing rate, making the mixing more uniform, circumventing the issue of the mixing blind spot, and improving mixing quality.Machine hydraulique verticale de mélangeage de fourrage, comprenant un corps de cuve externe (1), un corps de cuve interne (2), un dispositif de mélangeage et un dispositif dalimentation. Une extrémité supérieure du corps de cuve externe (1) a une forme cylindrique et une extrémité inférieure de celui-ci a une forme conique. Le corps de cuve interne (2) est situé à lintérieur du corps de cuve externe (1), le dispositif dalimentation est situé au-dessus du corps de cuve interne (1), et le dispositif de mélangeage est placé de façon mobile à lintérieur du corps de cuve interne (2). Le dispositif dalimentation comprend un moteur (3), une bielle (4) et un dispositif hydraulique (5), un bornier de sortie du dispositif hydraulique (5) étant rel