In summer, you should eat more melons, cool vegetables and "sterilization" vegetables. The temperature is high in summer, and the human body loses a lot of water, so it must be replenished in time. The water in vegetables is natural, clean, nutritious and biologically active water filtered by multi-layer biofilm. A person who eats 500 grams of melons and vegetables every day is equivalent to drinking 450 ml of high-quality water, and melons and vegetables have the effect of lowering blood pressure. The poison of summer heat and dampness will affect human health. Eating some cool vegetables is conducive to promoting fluid production and quenching thirst, relieving summer heat, clearing away heat and purging fire, and expelling toxin and relaxing bowels. Bitter gourd, cucumber, tomato, eggplant, celery, lettuce, asparagus, watercress, cold potato and so on are all cold vegetables. In addition, summer is the season of frequent diseases, especially intestinal diseases. Eating more "sterilized" vegetables such as garlic, onion, leek, green onion and chives can prevent diseases. It's cool, it won't cause irritation when eaten, and it is rich in potassium salt, which can make up for the loss of potassium salt in the body. But be careful not to put the watermelon in the refrigerator for more than 3 hours. Tomatoes are the sweetest and most nutritious in summer. It can also clear away heat and toxic materials, calm the liver and remove fire. Pear is also known as "natural mineral water" because it is fresh, tender and juicy, sweet and sour, and it is the best hydrating skin care product. Traditional Chinese medicine believes that it has the effect of removing fire, clearing away summer heat, relieving fever and removing annoyance. However, it should be noted that the most important thing before the fruit is imported is disinfection and cleaning. Grapes, strawberries, bayberry and other skins often have pesticide residues. Besides cleaning them thoroughly with running water, they should also be soaked in clean water for at least half an hour.