Respiratory symptoms such as cough and fever in 3-year-old children are usually caused by some pathogenic bacteria such as viruses, bacteria or mycoplasma. This condition can be treated with the following methods: 1) etiological treatment, 2) symptomatic treatment. 1) Etiological treatment, if it is a viral infection can be given to apply antiviral drugs for oral or intravenous infusion, oral can choose ribavirin granules, or the four seasons antiviral oral solution, intravenous infusion can choose adenosine injection. If it is caused by bacterial infection, you can choose cephalosporin or penicillin antibiotics, oral can choose cefixime or amoxicillin granules, intravenous infusion can choose cefotaxime sodium, or amoxicillin sodium sulbactam sodium for injection and other drugs. If it is caused by mycoplasma infection, macrolide antibiotics can be applied, and azithromycin or erythromycin granules can be chosen for oral administration. The above is the treatment for the cause. 2, symptomatic treatment, according to the child’s temperature, low fever to give more water, with warm water wipe, or use antipyretic paste and other physical cooling methods to reduce fever. If the body temperature is greater than or equal to 38.5℃ in high fever, oral antipyretic drugs should be used for treatment. If the temperature continues to be high, intramuscular injection or intravenous infusion of antipyretic drugs can be used to reduce fever if necessary. Depending on the symptoms of the child’s cough, oral medication can be given to relieve the cough, such as pulmonary cough combination or aminoglutethimide. If your child has a heavy cough, you can also apply nebulized inhalation to treat the cough. You can also apply acupuncture point compresses, or acupressure and massage to treat fever and cough. During the illness, it is important to eat lightly, drink plenty of water and get enough sleep to help the child recover from the disease.