The product has a supporting structure that forces or maintains the mandible open. During oral surgery, place between the teeth of the patient to keep the mouth open. The parts connecting to the patient mouth on each side are designed and protected by the softer rubber, it is much more comfortable, the outside of connecting is also soft rubber, avoiding hand slides. This cheek retractor has good strength and toughness, which can maintain a certain opening degree during oral treatment. It is a good auxiliary tool during oral treatment.