There are 2 types of cases: 1. For pituitary microadenoma, the drug needs to be stopped routinely because the possibility of tumor growth is not high. Visual field exams are to be monitored once every three months. Patients should always observe themselves and if there is any visual disturbance or any new headache occurs, then go to the hospital for MRI. If there is obvious tumor growth, take the medication immediately and reach the effective dose quickly. 2. If the patient has a pituitary macroadenoma, especially near the optic nerve or invading the cavernous sinus, in principle, pregnancy should be avoided until the tumor shrinks. If you are inadvertently pregnant, you can consider the following 2 options: 1. Continue to take the medication. 2. Discontinue the medication, and then monitor the visual field, and saddle area MRI continuously during the pregnancy. If the tumor increases in size, resume taking the medication first. If the highest dose is reached when it is still ineffective. Tumors need to be removed via nasal butterfly surgery in late pregnancy. Or if the month is big enough to give birth as early as possible.