A functioning adrenal adenoma means that the patient’s hypertension is adenoma-related. The adenoma secretes aldosterone, which is a sodium- and water-retaining substance that causes an increase in volume and raises blood pressure. Steps of adrenal adenoma treatment: 1. Those who have headache, nocturnal urination and weakness should be thought of; 2. Those who have low potassium should consider this disease after excluding digestive tract diseases and side effects of diuretics; 3. Those who have low basal renin and still have low renin level after low salt stimulation can be diagnosed; 4. CT localization of adrenal gland; 5. Consider surgery for functional adrenal adenoma, otherwise follow up and observe; 6. 6 months after acute cerebrovascular disease cannot receive anesthesia for surgery. The indicator to determine whether the adrenal adenoma or hyperplasia is functional is not the high or low level of aldosterone; rather, it is the decrease in plasma renin activity, especially in the low salt standing and other excitation state plasma renin activity is still very low to determine the diagnosis! This is due to the inhibition of renin secretion from glomerular parietal cells when aldosterone is increased. This is due to the inhibition of renin secretion by paraglomerular cells when aldosterone is increased. Adrenal adenoma surgery depends on the function of the lesion: adrenal vesicles are not operated on; non-functional adrenal adenomas are not operated on from a hypertension point of view because they have no effect on blood pressure after surgery; surgery is not actively advocated in the case of functional adrenal adenomas with normal blood potassium and well-controlled blood pressure and in the case of elderly people; some people are not willing to undergo surgery yet and must be investigated and understood before surgery; functional adrenal adenomas with low blood potassium and difficult blood pressure control should be operated on in a timely manner. Surgery should be performed promptly.