The utility model discloses a two-arm stirrer which comprises a base, a single hydraulic cylinder pillar and a drive motor, wherein the single hydraulic cylinder pillar is arranged on the base, the upper end of the single hydraulic cylinder pillar is fixedly provided with a fixed box, the drive motor is arranged in the fixed box, the front end of the drive motor is provided with a threaded drive shaft, the two sides of the threaded drive shaft are respectively provided with a transmission mechanism, and each transmission mechanism is provided with a stirrer. According to the utility model, the purpose that two stirrers just need one power device is achieved; the two-arm stirrer is reasonable in design and compact in structure; an output shaft on the drive motor is designed as the threaded shaft, the transmission mechanisms are arranged on the two sides of the threaded shaft and are fixedly provided with stirring shafts, so that the drive motor can synchronously control the stirring shafts to rotate, and therefore, the two-arm stirrer is convenient to operate.