High blood pressure even after adrenal adenoma is removed may be related to incomplete removal of tumor tissue, postoperative pain, other causes of high blood pressure and so on. 1. Incomplete resection of tumor tissues: Incomplete resection of tumor tissues after adrenal adenoma surgery leads to the existence of some functional tumors in the body, such as pheochromocytoma, aldosteronism and so on, which may cause the increase of blood pressure. 2. Postoperative pain, spirit and environment, etc.: Postoperative pain of adrenal adenoma, emotional tension and anxiety may lead to increase of sympathetic excitability of human body, and increase of blood pressure caused by excessive secretion of catecholamines, which generally do not need any special treatment, and can be relieved by self-adjustment, maintaining a comfortable mood, and getting enough sleep. 3. Other causes of hypertension: (1) about 60% of hypertensive patients have family history; (2) contraceptive pills, hormones, anti-inflammatory painkillers, etc. can affect blood pressure; (3) obesity, diabetes mellitus, sleep apnea hypopnea syndrome, thyroid disease, renal artery stenosis, renal parenchymal damage, other neuroendocrine tumors and so on. Therefore, patients who still have high blood pressure after adrenal adenoma resection should clarify the cause as soon as possible and actively cooperate with doctors for treatment after diagnosis.