The high temperature and high humidity in summer make the human body susceptible to the external environment, especially the elderly because of the decline in the physiological functions of tissues and organs and the weakened ability to adapt, which can cause a variety of diseases or aggravate the original disease if not taken care of. Therefore, the elderly, especially those suffering from hypertension, cardiovascular and diabetic diseases, should pay special attention to health care and live safely through the summer. Specific attention should be paid to the following points: 1, a light diet, pay attention to health. In summer, the digestive function of the elderly generally decreases and they do not think about eating. The food for the elderly should be warm and soft, easy to digest, light and nutritious, appropriate to eat some fresh vegetables and fruits, and fish, shrimp, lean meat, soy products, less fatty meat, baked cake, doughnuts and other greasy and thick things. Three meals should be regular, regular and quantitative, do not be too full and too hungry. In addition, we must pay attention to dietary hygiene, do not eat spoiled food, do not buy or eat food from individual cooked food stalls without health permits, overnight meals and refrigerated meals must be heated and cooked thoroughly before eating to prevent food poisoning and intestinal diseases. 2, maintain a good state of mind, quiet and nourish the summer heat. In the summer, the fire is strong, the elderly in the spirit, psychological and other aspects should rest its anger, quiet its heart, peace of mind, so that the heart clear to maintain a quiet state. To develop a calm personality habits, should be good at self-control, quiet nourish the gods, avoid dry control of anger, maintain emotional stability and open-minded optimism. 3, life has a rule, living in a regular. In summer, the elderly should do “early to bed and early to rise, no aversion to the day”. After rising in the morning, appropriate physical exercise, which is conducive to improving the thermoregulatory function, enhance the tolerance of heat, should be appropriate nap, in order to nourish the body in the best condition, not to sleep in the open air, under the eaves, corridors and windows, etc., not to lie in front of the wind, so as not to be cold and induce disease. 4, room ventilation, loose clothing. The living room of the elderly should be kept clean and hygienic, ventilated and quiet. Do a good job of cooling the indoor heat, close the doors and windows reasonably, ventilation avoid staying in a hot environment for a long time. If the outdoor temperature is low in the morning and evening, you should open the doors and windows, and if the outdoor temperature is high at noon, you should close the doors and windows and start electric fans and air conditioners. The clothing of the elderly should choose cotton, linen, silk and other woven fabrics, to facilitate sweat absorption and heat dissipation. It is not advisable to use electric fans and air conditioners for a long time electric fans, air conditioning wind, far less than the natural wind soft, moist and diffuse. The elderly after long blowing fans, air conditioning, easy to make local blood circulation is blocked, muscle pain, can also aggravate the headache lumbar muscle strain, cervical spondylosis, vasculitis, facial nerve palsy and other diseases. 5, avoid sharp cooling. Summer high temperature older people should not storm storm cold shower, avoid leading to a sudden drop in body temperature, so that the tendons and bones cooled caused by joint pain, limb numbness. Especially the elderly suffering from coronary heart disease, hypertension, after the bath to dry the body as soon as possible, wear good underwear and then in the wind and cool place. 6.Eating in moderation. Summer heat should not eat too much cold drinks such as carbonated beverages, popsicles, beer and other foods that have adverse physical stimulation of the gastrointestinal mucosa, these foods can make the gastrointestinal tract peristalsis weakened, or even spasm. Therefore, especially the elderly with digestive tract disease should not drink more. Carbonated beverages contain a large amount of carbon dioxide gas, which can increase the pressure in the stomach after drinking and combine with gastric acid to produce acidic carbonic acid compounds, which can aggravate the inflammation of the gastrointestinal tract and even lead to ulcer perforation. Before and after meals, cold drinks will also dilute gastric juices, slowing down gastrointestinal peristalsis and affecting food digestion. Therefore, 30 minutes before and 1 hour after the meal should not eat cold drinks. 7, summer heat and humidity, beware of disease summer heat and humidity. Hot summer weather, more rain, heavy moisture, increasing the source of external moisture. The elderly need to wear a straw hat or palm umbrella, do not let the sun directly on the head, especially the frail elderly avoid walking in the hot sun or sun exposure. Clothes should be changed and washed regularly, and baths should be taken frequently to keep the skin clean and prevent skin diseases. In order to prevent heat stroke, you should always have some heat-relief medicine at home and around you, such as Ren Dan, Qingliang Oil, Huo Xiang Zheng Qi Shui and Feng Yao Jing, etc. You can also drink some green bean soup and heat-relief tea. In short, the summer is long and hot, the elderly should pay attention to the diet, living in a regular manner, and happy mood to get through the summer heat, and go to the hospital in time to avoid delaying the symptoms.