Causes of diarrhea and vomiting include acute gastroenteritis and gastrointestinal colds, which require prompt medical attention and appropriate treatment after relevant examinations, including improving dietary habits or applying medications to relieve symptoms. Common causes and treatment 1, acute gastroenteritis: mainly caused by bacteria, viruses and parasitic pathogens, or due to the consumption of cold and irritating food leading to acute gastroenteritis, mainly manifested as abdominal pain, diarrhea, nausea, vomiting, etc., generally after rehydration, adequate rest, diet control symptoms can be briefly relieved, if not relieved, need to promptly seek medical advice, to give the cause and symptomatic treatment; 2, gastrointestinal type of cold: mainly due to the cause and symptomatic treatment. If the symptoms are not relieved, it is necessary to seek medical attention and give symptomatic treatment. If the diarrhea causes dehydration, it is necessary to replenish water and electrolytes in time. Attention should be paid to adjusting dietary habits, pay attention to dietary hygiene, do not eat spoiled or contaminated food, instead eat light, easily digestible and nutritious food, avoid eating too much stimulating food, reduce the intake of coffee and strong tea. Pay attention to rest and avoid overexertion to avoid aggravating the disease.