Usually low fever is at 37.3-38°C. Some patients are asymptomatic. However, some patients may have symptoms such as weakness, gastrointestinal reaction and limb tenderness. Vomiting, which is also a systemic reaction symptom of fever, is also normal and should not be nervous. Generally, because of low fever, it will cause uncomfortable symptoms of gastrointestinal function. If the vomiting is severe, you can take a little stomach medicine, such as gastrofacial, omeprazole. The symptoms can be relieved when the low fever goes down. You should also pay attention when eating: first, eat something a little warm, do not eat too cold. Secondly, drink more warm water to warm up your stomach and don’t let it be stimulated too much.