Nausea and vomiting in the summer can be caused by improper diet, gastroenteritis, heat stroke, etc. If it is caused by eating cold food, you can apply a hot water bag. For gastroenteritis caused by bacterial infection, metoclopramide can be used to inhibit vomiting, and norfloxacin can be used to inhibit bacteria. Heat stroke can be caused by oral rehydration salts to replenish water and electrolytes. 1. Improper diet: summer weather is hot, eat a lot of ice cream, watermelon and other cold food, stimulate the gastrointestinal tract, may cause nausea and vomiting, if the symptoms are mild, you can not need special treatment. Use a hot water bag on the stomach to warm the abdomen, you can also rub the abdomen clockwise to promote gastrointestinal peristalsis and relieve vomiting. 2. gastroenteritis: summer food is easy to deteriorate, if it is eating not fresh vegetables and fruits and other infected bacteria, caused by gastroenteritis and other diseases, the phenomenon will also occur, you can inject metoclopramide, inhibit vomiting. You can also use norfloxacin, ciprofloxacin and other drugs to treat the cause of the disease, inhibit the growth of bacteria and relieve the inflammatory reaction. 3. Heatstroke: summer nausea and vomiting can also be caused by heatstroke, oral rehydration salts or infusion, timely replenishment of water and electrolytes. Go to a ventilated or cool place or indoor, avoid the hot environment. Nausea and vomiting in summer may also be accompanied by other systemic diseases, to identify the cause under the guidance of a doctor and timely treatment.