Timosartan can be taken for hypertension caused by pheochromocytoma, but is not recommended as a first choice or alone. Pheochromocytoma is a tumor originating in the chromophilic tissue of the neural ectoderm, which mainly secretes catecholamines affecting the endocrine system and leading to secondary hypertension. The alpha-blockers phenobarbital and prazosines (e.g., terazosin, phentolamine, and uradil) are preferred for the pharmacologic treatment of hypertension caused by pheochromocytoma. When patients with pheochromocytoma apply α-blocker effect is not good can be combined with the application of calcium channel blockers, angiotensin converting enzyme inhibitors, angiotensin receptor antagonists, etc. to lower blood pressure. Timosartan is an angiotensin receptor antagonist, so it can be combined with α-blockers to treat hypertension caused by pheochromocytoma in the above cases. Hypertension caused by pheochromocytoma is recommended to be treated in regular hospital specialties, and further surgical treatment or drug treatment plan will be guided by professional physicians to evaluate the condition.