Empty Butterfly Saddle Syndrome is a relatively common saddle region lesion in which the normal pituitary gland is covered above by the saddle diaphragm. Within the saddle diaphragm is the central foramen, between which passes the pituitary stalk. Once empty butterfly saddle syndrome occurs, cerebrospinal fluid and arachnoid membrane enter into the pituitary saddle region and form cerebrospinal fluid, causing corresponding compression of the pituitary gland. The incidence of empty saddle syndrome is slightly higher in men than in women, and it often occurs over the age of 35. When empty pterygoid syndrome occurs, some patients will not have the corresponding clinical symptoms and do not need treatment, while some patients may have headache or hypogonadism, obesity, or visual field defects, and the above clinical symptoms often require surgical treatment.