After the volcano, due to the hot weather, low air pressure, high humidity, increased sweating, blood concentration, increased blood viscosity, easy to form thrombosis, embolism, triggering heart attack, threatening life safety. We once again remind patients with cardiovascular disease to pay attention to the following points, “heart” through the summer. 1, pay attention to increase drinking water. In summer, we should pay special attention to timely drinking water. Drink a small amount of water several times is better, drinking too much water will increase the burden on the heart. 2, maintain a good mood. Keep a calm mind and optimistic emotions, can achieve the effect of “the heart is quiet and naturally cool”. 3, do not do strenuous activities. The elderly and patients with cardiovascular and cerebrovascular diseases should reduce outdoor activities, and should not participate in strenuous sports. 4.Strengthen the summer heat protection and cooling. Open the air conditioning indoor and outdoor temperature should not be too large, generally to 25. C-26. C is more appropriate; electric fans do not high-grade direct blowing abdomen and head; night sleep to pay attention to abdominal warmth, so as not to get cold. 5, pay attention to lunchtime rest. To get up on time, to maintain adequate sleep, nap should be half an hour after the meal, to supplement the lack of sleep at night. 6, pay attention to the regulation of diet. Summer diet should be more variety and change, light and easy to digest, appropriate to eat more vegetables, fruits. Advocate “four low a high”: low calorie, low salt, low fat, low cholesterol, high vitamin, should not eat more sweets and spicy stimulating products. It is not advisable to eat more cold food and cold drinks. 7.Prepare first aid medicine. Keep a first aid kit handy in case of urgent need.