The nausea may be caused by gastrointestinal dysfunction and gastroenteritis, which can be treated with lifestyle modification and medication. 1. Gastrointestinal dysfunction: Anxiety, taking cold food, heredity and other reasons may lead to abnormal brain and intestinal interaction, and symptoms of gastrointestinal dysfunction such as watery stools and nausea may occur. You can relax, eat a light diet, and keep your abdomen warm. You can also take loperamide, montelukast and other drugs to treat diarrhea; take domperidone and other drugs to relieve the symptoms of nausea. 2. Gastroenteritis: viruses, parasites, bacteria and other microbial infections may lead to gastrointestinal tract mucosal congestion, edema and nausea symptoms. If it is caused by bacterial infection, you can use norfloxacin, gentamicin and other antibiotics; you can also take montelukast to protect the intestinal mucosa to relieve the symptoms of diarrhea; you can also use vitamin B6, domperidone and other drugs to relieve the symptoms of nausea. If the symptoms of thin watery stools and nausea occur, it is not recommended to take medication on their own. It is recommended to go to the hospital to check the blood test, stool routine and other items to find out the cause of the cause of treatment under the guidance of the doctor.