Pituitary adenoma is a common benign intracranial tumor that occurs mostly in the anterior pituitary gland. The severity of pituitary adenoma needs to be judged by the size of the tumor and the degree of invasion of the surrounding tissues. Pituitary adenomas are usually benign, but a few pituitary adenomas have a tendency to grow aggressively. Pituitary adenomas that are small in size and do not cause compression of surrounding tissues tend to be less severe; pituitary adenomas that are larger in size tend to be more symptomatic and tend to cause compression of surrounding nerve tissue. Larger pituitary adenomas may invade the surrounding tissues and compress the optic nerve, leading to headache, vision loss or even loss of vision. The compression of pituitary tissues by tumors may affect pituitary function, leading to symptoms such as acromegaly, centripetal obesity, menstrual disorders in women and sexual dysfunction in men. Pituitary adenoma can be treated by surgery or combined with radiotherapy and medication: 1. Surgery: At present, the tumor is mostly removed by neuroendoscopic surgery through the nasal pterygoid sinus. A small number of larger tumors can be removed by craniotomy. If the tumor is small in size and does not invade the surrounding tissues, it is usually possible to achieve complete surgical excision, with better prognosis and low chance of recurrence. Invasive pituitary tumors often cannot be completely excised and are prone to recurrence. 2.Medication: Growth inhibitors, bromocriptine and other drugs can be used to assist in the treatment of pituitary adenomas. Patients with poor physical condition can choose drug therapy or radiation therapy. Patients with giant pituitary adenoma may have sequelae such as hypopituitarism, loss of vision and uveitis after treatment, and patients are advised to have timely treatment for pituitary adenoma. Pituitary adenoma has a certain degree of recurrence, and patients are advised to undergo regular review to monitor the recurrence of pituitary adenoma.