Suddenly high blood pressure in the elderly may be caused by mood swings or strenuous activities, or sudden cold weather leading to blood vessel spasms, overexertion, poor rest, or staying up late at night may also cause a sudden rise in blood pressure. Special attention should also be paid to the condition of the disease, the emergence of cerebrovascular complications such as cerebral hemorrhage, cerebral infarction, etc., to go to the hospital for timely examination and treatment so as not to delay the disease. The elderly should pay attention to keep a good state of mind and emotional stability, add and remove clothing appropriately, pay attention to rest and do not stay up late, do not overwork and strenuous activities.