Bite -block of improvement

The utility model provides a bite -block of improvement, including the bite -block main part, the bite -block main part is equipped with latched device for one side has the hollow circular cylinder of breach in the bite -block main part of breach both sides, and the bite -block main part includes inlayer and skin, and the inlayer is made by stereoplasm elastic material, is outerly made by mild material, and the bite -block main part outside still is equipped with the recess, and the interior side surface of bite -block main part is equipped with the raised grain. The utility model provides a bite -block can be better fixed pipe, the bite -block is difficult to drop from the oral cavity to can protect patient's tooth, simple structure, convenient to use.