This is actually a very specialized issue. Because it involves the patient’s X-ray, clinical examination, model analysis, and may also involve the patient’s overall facial bone coordination. In the clinic, the judgment standard of bony antomandibular is as follows: 1. Appearance: Observe the patient’s facial coordination, especially the development of jawbone, whether the development of jawbone is too long, whether the patient presents a sunken face in the side, and whether the patient’s angle of the lower jaw is too obtuse, and whether the face is very long in particular, which is also a standard of judgment; 2. The judgment of bony antomandibular can be made by the patient’s cranial lateral X-rays and CT, and the patient can be analyzed whether there is a lack of coordination of jawbone development, which is a very important issue. The patient can be analyzed by lateral cranial X-ray and CT to see if there is jawbone development incongruity, which is a very important way of judging; 3. According to whether the patient’s jawbone can be retreated or not, that is to say, whether the jawbone can be retreated to the extent that the lower teeth can reach an opposite edge with the upper anterior teeth, which can be taken as a criterion for judging. If this is possible, the patient may be suffering from a functional problem, not only a skeletal problem; if the mandible can not back up to reach this state, or even if the mandible is artificially backed up, it can not reach this normal occlusal state, or the state of the edge, basically, it can be judged that the jawbone problem is more serious, i.e., the patient suffers from bony maxillofacial reflexes. At the same time, the patient’s tongue should also be observed, because some patients may have some problems with the position, direction and size of the tongue.