Abstract: In intensive sheep breeding, there are disadvantages such as low efficiency, heavy workload and high cost in traditional sheep artificial restraining method. A novel type of sheep auto-adjust restraining device with simple structure was developed, which was highly automated, convenient for operation, labor saving and practical for usage. In order to evaluate its applicative effect in sheep production, the time consuming in Brucella vaccine injection and weighing by using developed auto-adjust restraining device was compared with that by using traditional artificial restraining method. The work efficiency of Brucella vaccine injection and weighing was increased by 3 times and 1.5 times, respectively, indicating that the production efficiency was improved; the developed auto-adjust restraining device prevented sheep from competing for food and separated workers from sheep. The development of sheep auto-adjust restraining device is of great significance for the improvement of comprehensive production and promotion of persistent and healthy development of animal husbandry industry. The device has the potential to be promoted and applied.