The invention relates to a cable terminal manufacturing device which is composed of a bearing support, a pedestal, a shaft, a clamping assembly, a shaft sleeve, upper and lower adjusting rods, compression bolts, rotating sleeves and a hydraulic assembly. The upper and lower adjusting rods are arranged on the bearing support. The upper and lower adjusting rods are provided with the rotating sleeves. The shaft is connected with the clamping assembly and is arranged on the upper and lower adjusting rods through the rotating sleeves. The shaft is sleeved by the rotating sleeves. As the upper and lower adjusting rods are provided, the height of the cable head can be adjusted according to the height of a manufacturing worker. As the shaft is provided, the angle of the cable head can be adjusted. As chucks are internally provided with protection pads, the insulation layer of the cable can be effectively protected in the clamping process. As the chucks are designed in the arc structure, the overall clamping is enabled to be more reliable. As the rotating sleeves drive an oil pipe to slide in the manufacturing process, the holding force in the manufacturing process is reduced, and the laborwork is reduced. The device is simple and convenient to use, thereby having great practical and popularization value.