High blood pressure at night may be related to obesity, alcohol consumption, failure of antihypertensive drugs and snoring. 1. Obesity. Obese people are prone to nocturnal sleep apnea syndrome, which may cause symptoms of respiratory obstruction after falling asleep, causing sympathetic excitation, accelerated heart rate and increased blood pressure. 2. Alcohol consumption. Alcohol will make the body’s sympathetic nerve excitation, causing myocardial contraction, will also prompt the renin angiotensin system excitation, the release of renin and other vasoconstrictor substances increased, resulting in vasoconstriction, blood pressure rise. 3. Failure of antihypertensive drugs. If patients use short-acting antihypertensive drugs such as captopril and nifedipine, the failure of antihypertensive drugs at night will cause blood pressure increase, and it is recommended to consult the doctor to use long-acting antihypertensive drugs such as Benadryl and Bisoprolol hydrochloride for this situation. 4. Snoring. Snoring is also easy to lead to nighttime apnea, severe oxygen deprivation, causing stress reaction, human sympathetic nerve excitation, heart rate acceleration, blood pressure rise. If you find that your blood pressure continues to rise at night, it is recommended that you go to the hospital in time and be treated according to medical advice.