Most of the pituitary hyperplasia is physiological and benign lesions. However, pituitary tumors can cause abnormal pituitary function and hormone secretion disorder. Therefore, early treatment is necessary. The goal of pituitary tumor treatment is to inhibit the secretion of autonomic hormones, remove the tumor to the greatest extent, maintain normal pituitary function, reduce the impact of the tumor on vision, prevent the recurrence of the tumor, and prevent and deal with complications. Examples: 1. In lactating women, lactation continues after weaning, at this time, cranial CT or MRI may suggest pituitary fullness, which needs to be treated with caution, because after weaning, if physical stimulation may still exist; 2. In adolescence, cranial CT or MRI may suggest pituitary fullness. leading to lactation. Also the size of pituitary tumor and pituitary size should not be confused.