2 years old little baby with low fever is mostly caused by bacterial infection, indigestion, viral infection and other reasons, can be treated with medication and general treatment. 1. Bacterial infection caused by the baby’s low fever: you can take cephalosporin antibiotics, penicillin antibiotics, macrolide antibiotics, such as amoxicillin granules, cefixime granules, azithromycin oral solution and so on. 2. indigestion caused by the baby’s low fever: you can take probiotic drugs, such as bacillus subtilis bacillus granules, clostridium casei bacillus bacillus, etc.; you can also take lactasexan, pediatric compound pancreatic enzymes, etc., to promote the baby’s gastrointestinal digestion. 3. Viral infections: self-limiting diseases, can be symptomatic antipyretic treatment, the use of physical cooling or antipyretic medication (temperature over 38.5 ℃), etc., commonly used antipyretic drugs medications such as acetaminophen granules, ibuprofen granules. During the period of illness, you can drink more warm water and take light and easy-to-digest food. These drugs have different degrees of adverse reactions, when using them, be sure to strictly follow the doctor’s instructions under the guidance of a doctor.