Pituitary tumors have an incidence of about 1 in 100,000 and account for 10-20% of intracranial tumors, most of which are benign adenomas. According to the hormones secreted by the tumor cells, they can be classified as PRL tumor, GH tumor, ACTH tumor, TSH tumor, LH/FSH tumor, mixed tumor, unclassified adenoma and non-functional pituitary tumor. The main clinical manifestations of pituitary tumors are: 1. Excessive secretion of certain hormones and corresponding hyperfunction. For example, female patients with PRL tumor show amenorrhea, lactation and infertility, male patients show sexual dysfunction; GH tumor shows gigantism and acromegaly; ACTH tumor shows centripetal obesity, full-moon face, acne, hirsutism and purple lines, etc. 2.Tumor infiltrates and compresses normal pituitary gland, causing its hormone secretion to be impaired, which manifests as pituitary hypofunction; 3.Tumor compresses surrounding structures, such as compression of optic nerve causing visual field loss, vision loss or even blindness. The treatment of pituitary tumor is mainly surgery, supplemented by drug therapy and radiation therapy. Each treatment method has its own advantages and disadvantages, and individualized treatment plans should be made according to the patient’s age, tumor size, type, fertility status and economic status. Reminder: All patients who develop pituitary tumors should be followed up for life with regular review of pituitary function and pituitary MRI.