High blood pressure in spring may be caused by environmental factors, hormonal changes or dietary factors. 1. Environmental factors: At the beginning of spring, the temperature is unstable and the temperature difference is large. When the temperature difference is large, the human body’s blood vessels contract to increase the load on the heart, which will cause the blood pressure to rise. 2. Hormonal changes: the human body’s hormone secretion is relatively vigorous in spring, especially some of the blood pressure-raising hormones, such as dopamine, renin and so on, will lead to increased blood pressure. 3. Dietary factors: if accompanied by other diseases, such as diabetes, hyperlipidemia patients, do not pay attention to diet, often eat some high oil and high sugar food, resulting in elevated blood sugar, lipids, but also blood pressure will rise. In early spring when the temperature is still relatively low, the patient’s blood vessels are prone to contraction, so the blood pressure will rise, so the patient usually also need to monitor their blood pressure, to avoid excessive fluctuations in blood pressure.