Carvedilol can be used to treat primary hypertension. If the blood pressure cannot be controlled by this drug alone, it can be combined with other antihypertensive drugs, for example, it is relatively preferable to combine with thiazide diuretics, and the representative drugs are hydrochlorothiazide tablets. In addition, this drug can also be used to treat cardiac insufficiency, especially for patients with mild or moderate cardiac insufficiency. When taking this drug, it can also be combined with digitalis, diuretics or angiotensin-converting enzyme inhibitors to further improve heart failure. For example, for the treatment of hypertension, the recommended starting dose is 6.25 mg/day, taken orally twice/day, and the dose will be gradually increased according to the patient’s tolerance level. For the treatment of heart failure, the recommended starting dose is 3.125mg/time, 2 times/day orally, and the oral dose can be gradually increased according to the patient’s tolerance.