Meningioma of the lateral 1/3 of the pterygoid crest is a late onset of symptoms. The tumor occurs on the large wing of the pterygoid bone and causes bone growth in the posterior lateral wall of the orbit and temporal area, resulting in orbital shrinkage, or the tumor invades directly into the orbit and causes the eye to protrude. What are the preventive methods of orbital shrinkage? It is related to the degree of tumor development and surgery. This disease is prone to recurrence. Lateral pterygoid crest meningiomas are not difficult to remove surgically and postoperative recurrence and neurological impairment are rare. In medial meningiomas, total resection is difficult, and postoperative neurological impairment of III, IV, and VI cerebral nerves may occur in other patients with postoperative motor deficits and motor aphasia. For patients with medial meningiomas that cannot be completely resected, postoperative radiotherapy can be used to prevent recurrence. If the tumor recurs, re-surgical resection can be considered. The medial type tumor is deep in the internal carotid artery and optic nerve. In most cases, the tumor grows spherically and pushes the internal carotid artery inward, and in a few cases, the internal carotid artery is encapsulated by the tumor. In the former case, the tumor is separated from the internal carotid artery and optic nerve by a layer of arachnoid membrane. In the former case, the tumor is separated from the internal carotid artery and optic nerve by a layer of arachnoid membrane. If there is really difficulty, it should not be forced. However, if the tumor wraps the internal carotid artery, the internal carotid artery may be narrowed in a circular pattern or even occluded, and it is difficult to remove the tumor around the intracranial artery.