1. Drink plenty of water: the temperature is high in summer, and the human body is easily dehydrated. Therefore, it is necessary to increase the water intake in the diet to maintain the water balance of the body.

2. Light diet: In summer, the temperature is high, and people are prone to sweating, so the diet is light, so as not to affect digestion and health. You can eat some cool fruits and vegetables, such as watermelon, cucumber, strawberry and grapefruit.

3. Avoid cold food: Hot weather in summer will affect the digestive function of the human body, and cold food will easily lead to gastrointestinal diseases. Therefore, you should avoid eating raw or cold food, and try to heat and cook the food before eating.

4. Ensure food hygiene: When the temperature is high in summer, the speed of food will be faster, so you must pay attention to hygiene when cooking and storing food to avoid food poisoning.

5. Control calorie and carbohydrate intake: In summer, human metabolism tends to slow down, so it is necessary to control calorie and carbohydrate intake to avoid obesity and metabolic diseases.

In short, summer diet needs to be light, eat more fruits and vegetables, avoid cold food, ensure food hygiene, and control calorie and carbohydrate intake.