Cavernous hemangioma is the most common orbital tumor in adults, it is a benign tumor with good prognosis and usually develops in one eye. When the tumor is small, it may not have any symptoms, and when it grows up, it mainly manifests as protrusion of the eyeball, and when it compresses the nerves, it may present with symptoms such as vision loss, optic nerve atrophy, ocular motility disorders, diplopia, and so on. Cavernous hemangioma needs to be identified with other orbital tumors, such as nerve sheath tumor, lacrimal gland tumor, hemangioepithelioma, etc. through CT, MRI, ultrasound and other examinations. Treatment of cavernous hemangioma is divided into conservative treatment and surgery Conservative treatment is actually regular observation, which is for patients with small size of tumor (<1cm), without affecting the function and appearance of the eye. Surgical treatment is divided into open orbital resection and non-open orbital resection, which is mainly based on the size and location of the tumor. The risks of surgery are mainly vision loss or even loss; the other is bleeding caused by surgery.