The invention relates to a small super-speed horizontal helical centrifugal machine, and belongs to the technical field of solid-liquid separation equipment. According to the horizontal helical centrifugal machine, a platform is arranged on supporting feet and provided with an outer shell barrel, the two ends of the outer shell barrel are provided with positioning steps, the positioning steps are provided with a front bearing block and a rear bearing block respectively, a feeding pipe is arranged in a bearing end cap on the front bearing block, the side face of the feeding pipe is provide with a liquid level adjustment plate and a liquid stopping ring, the rear bearing block is provided with a rotary drum, a helical body is arranged in the rotary drum, a position, close to the rear bearing block, of the rotary drum is provided with a fixed blocking ring, the side, close to the rear bearing block, of the fixed blocking ring is provided with a discharging outlet, the outside of the rear bearing block is provided with a first motor and a second motor, the first motor is provided with a first synchronous wheel connected with the helical body, and the second motor is provided with a second synchronous wheel connected with the rotary drum. The separation factor of the horizontal helical centrifugal machine can reach 4500, the rotation speed can reach 10000r / min, a solid-liquid mixture with a solid containing rate of 10%-90% can be separated, the liquid rate of solids is small after processing, and the horizontal helical centrifugal machine is suitable for fine production and fully-automatic dehydration processing at small amount.