The causes of elevated blood pressure in spring include physiological factors such as overwork and temperature changes, as well as pathological factors such as primary or secondary hypertension. 1. Physiological factors: Spring weather is characterized by unstable temperatures and large temperature differences between morning and evening. Changes in temperature will lead to contraction and diastole of blood vessels, and fluctuations in blood pressure will occur. It is only a temporary increase in blood pressure, so you can pay attention to rest, keep warm, and monitor your blood pressure in general. 2. Pathological factors: the diagnosis of hypertension is based on three measurements taken on a different day, with systolic blood pressure ≥140mmHg and/or diastolic blood pressure ≥90mmHg, which meets the diagnostic criteria for diagnosis of essential hypertension. In addition to primary hypertension, secondary elevation of blood pressure may occur in cases of hyperthyroidism, pheochromocytoma, and kidney disease. If you are suffering from hypertension, you should go to the hospital in time to avoid delaying your condition.