The main symptoms of craniopharyngioma are developmental delay, polyuria, and vision loss in children, and visual impairment, headache, and amenorrhea in women and sexual dysfunction in men in adults, so craniopharyngioma is still very serious. The following is a further detailed analysis of what is the harm of craniopharyngioma. Craniopharyngioma accounts for 2-5% of adult intracranial tumors and about 10% of pediatric intracranial tumors. The tumor is located in the saddle area and compresses the optic nerve, resulting in blurred vision and visual field loss. These symptoms can be prodromal in adults, whereas pediatric patients are less able to respond to symptoms of blurred vision and visual field defects and to express visual impairment. They are often not easily detected by parents and adults in the early stages of visual impairment. Therefore, the tumor is detected and treated only when the tumor grows large and symptoms of hypothalamic damage, such as polyhydramnios and hydrocephalus, appear. In addition to direct pressure symptoms, craniopharyngioma is a tumor located in the hypothalamus, which can affect the secretion of hypothalamic hormones from both the hypothalamus and the hypothalamic-pituitary vessels of the pituitary stalk. It can also affect pituitary hormone secretion by invading and destroying pituitary tissue. It can seriously affect the growth and development of children and the production, secretion and regulation of a series of hormones in the hypothalamic-pituitary axis, which can lead to endocrine function disorders in the body. Theoretically, most craniopharyngioma are benign intracranial tumors, and the best treatment is surgical resection, which can achieve curative effect. However, because the tumor involves the hypothalamus structure and is located in the deep brain structure, it is a tumor that is difficult to be removed surgically. Total surgical resection of tumor often causes damage to important structures such as hypothalamus, such as optic cross, pituitary stalk, supraoptic nucleus, paraventricular nucleus and posterior perforator. Once these injuries occur, they may lead to more serious complications, so surgical treatment of craniopharyngioma is not easy. Hazard 4: Craniopharyngioma also has the possibility of carcinoma. After resection of the tumor, the study of tumor pathology section reveals that the basement membrane of its tumor-forming enamel cells is destroyed, with obvious cell heterogeneity, excessive staining and active nuclear division, suggesting tumor carcinoma. In summary, craniopharyngioma has a great impact on the life and health of patients, thus it can be seen that the harm of craniopharyngioma is still very serious. In addition, since craniopharyngioma resection is a difficult surgery in neurosurgery and has certain risks, patients are urged to detect and treat early, and choose a large hospital with many cases and good results in treating craniopharyngioma for surgery.