Babies who have low fever at night and normal during the day may be caused by mycoplasma, viral or bacterial infections, it is recommended to use anti-mycoplasma or anti-viral drugs for treatment, you can first choose azithromycin or anti-viral oral solution, blue scutellaria oral solution, etc., which is good for relieving mycoplasma and viral infections, and the symptom of low fever at night can be relieved by consecutive treatments for about 5 days. During this period, we should also pay attention to try not to let the baby eat too much food at one time before going to bed at night, otherwise it is likely to lead to the worsening of the symptoms of fever at night, and pay attention to the medicines to help digestion, for example, you can choose the large hawthorn granules, pediatric compound chicken internal gold powder, which is very good for relieving indigestion. You can also drink more boiled water before going to bed at night to promote sweating, which is conducive to the effect of fever reduction, if repeated failure to cure should go to the hospital for further examination.