More than four months old baby cough fever, mostly seen in respiratory tract infections, the treatment needs to use acetaminophen, pediatric cough syrup and other drugs symptomatic antipyretic cough, the presence of bacterial infections need to be anti-infective and other treatments. Fever and cough is a common symptom in pediatrics, for four-month-old babies are mostly seen in respiratory tract infections, such as acute upper respiratory tract infections, acute bronchitis or bronchopneumonia and other diseases, mostly caused by viruses (such as respiratory syncytial virus, rhinovirus, etc.) or bacterial (such as Streptococcus pneumoniae, etc.) infections. For such babies, when the temperature rises above 38.5 ℃ need to use antipyretic drugs (such as acetaminophen) for symptomatic fever, at the same time can be taken orally to relieve cough medication (such as pediatric cough syrup) symptomatic relief of cough and other treatments. The presence of bacterial infection requires the use of antibacterial drugs (such as cefaclor) anti-infection treatment. For recurrent fever or severe cough, lower respiratory tract infections (e.g., bronchopneumonia) should be taken care of, and if necessary, intravenous fluids and nebulization therapy such as budesonide should be used. The above medications should be used under the supervision of a physician, and it is recommended to actively seek medical advice from a specialist who can assess the condition and provide appropriate treatment.