Hypertension is a common disease and falls under the scope of chronic disease management. Human blood pressure is affected by many factors, such as the environment, temperature, whether after exercise, emotions and seasonal changes, whether there are smoking and drinking habits. Seasonal changes in blood pressure is a common phenomenon, the causes of high blood pressure in summer are as follows: 1. In summer, the weather is hot, people are more active, love to sweat, blood pressure will also rise and fall, there will be dizziness, brain swelling, chest tightness, panic, etc.. At this time, we should pay attention to a light diet, you can eat more bitter melon, lotus heart, corn, celery and other foods that can help lower blood pressure. In addition, some patients in the summer blood pressure fluctuations, sometimes high and sometimes low, some patients unauthorized reduction or discontinuation of drugs, after reflex will cause blood pressure rebound, blood pressure rise; 2, the summer heat, long days and short nights, the general sleep are not good, is also the reason for the summer blood pressure increase. So for the summer blood pressure increase need to do to insist on monitoring blood pressure, not just stop the drug, you can adjust the dose under the guidance of a doctor. In summer, sweat a lot, to timely replenish water. Daily routine should be regular and diet should be light.