The causes of low blood pressure in the morning include postural hypotension, primary hypotension, and hypotension secondary to heart disease, etc. You can choose to rest, lie down, replenish volume, and use medication. 1. Postural hypotension: Suddenly going from lying down to standing up will lead to postural hypotension, resulting in transient insufficient blood supply to the brain, which will lead to transient dizziness and black haze. If you get up too quickly in the morning, this situation will generally be relieved by itself, and the discomfort can be relieved by lying down immediately. 2. Primary low blood pressure: mostly seen in frail women, you can drink more water to increase blood volume. You can drink more water to increase the blood volume. You should strengthen the exercise in your normal life. 3. Heart disease: patients with heart disease, such as chronic heart failure, cardiomyopathy, heart valve disease, etc. will have low pressure. You can take sodium nitroprusside, hydrochlorothiazide, metoprolol and other drugs to improve heart function. 4. Secondary low blood pressure: low blood pressure caused by massive bleeding, infection, allergy, overdose of antihypertensive drugs, some endocrine diseases. The primary disease should be actively treated. Excessive bleeding should be promptly transfused with fluids and blood. Anti-allergy requires the use of antihistamines, hormones and so on. Infection should use antibiotics. Severe cases are recommended to actively seek medical treatment, and drugs should be used under the guidance of physicians.