Pituitary gland is an important endocrine organ in human body, during the growth of pituitary tumor, it will cause endocrine symptoms and nerve compression symptoms, the most common compression symptom is that the tumor compresses the optic nerve, leading to vision loss or even blindness, and the pituitary tumor may also compress the pituitary gland and cause pituitary hypopituitarism, which will make the person depressed or even confused, and when the tumor grows upwards further, it may also cause hydrocephalus, leading to headache and other symptoms. When the tumor grows upward and presses further, it may cause hydrocephalus, headache and other symptoms. When the tumor grows into the cavernous sinus from both sides of the saddle, it may also press on the arterio-ocular nerve, which may cause difficulty in opening the eyes and impaired movement of the eyes. Although a few types of pituitary tumors can be reduced in size through medication to alleviate the symptoms of pituitary tumor compression, most larger pituitary tumors require surgical removal of the tumor to alleviate the compression on the peripheral nerves. The surgical resection of pituitary tumors has gone through a series of evolutions. In the early stage, pituitary tumors were resected by craniotomy, and the postoperative reaction of patients was generally heavier, and the tumors might not be able to be resected cleanly. Later, the pituitary tumor was resected under microscope through sublabial incision or transnasal resection, the trauma of the operation was significantly reduced, and the recovery time after the operation was also significantly shortened, which became the mainstream way of pituitary tumor resection at one time. However, this technique also has obvious defects. Microscopic transnasal resection of pituitary tumors is difficult to see the surrounding structures due to the restriction of the tubular field of view of the nasal speculum as well as the depth of the field of view, and it is easy to retain tumors outside the field of view during the operation, especially for tumors of larger size. At present, the widely accepted method of pituitary tumor resection is to use neuroendoscopic resection through the nostril, which retains the surgical access of the transnasal approach under the microscope but overcomes the disadvantage of the narrow field of view of the transnasal surgery under the microscope, so that it is easier to see the tumor and the surrounding structures, and thus the pituitary tumors can be completely removed, which is especially suitable for the resection of large or aggressive pituitary tumors. Neuroendoscopic transnasal resection of pituitary tumor has become the main way of pituitary tumor resection. Transnasal resection of pituitary tumor needs to completely remove the tumor as much as possible, relieve the pressure of the tumor on the peripheral nerves, especially the optic nerve, and the important structures, and also need to correct the abnormality of hormone secretion for functional pituitary tumors, in order to achieve the endocrine cure, and the neuroendoscopic transnasal resection is an effective way of surgery.