The new Anti-Snoring Device is integrally formed by plastic injection molding and It connects upper and lower splints into a whole. When using our Anti-Snoring Device, it is able to retain the mandible in protrusive position, at the same time the movements of the lower jaw will be limited. It will also create unique vertical space and horizontal space between the upper and lower teeth rows in the oral cavity to reduce the vibration or collapse of tongue, soft palate and other soft tissue in the oral cavity and can effectively prevent the snoring.