Neonatal infection is the invasion of external bacteria or viruses and chlamydia into the infant’s body, which can cause an infectious reaction in various areas. The body resistance of newborns is very weak, so when they are exposed to the outside world, they are susceptible to bacteria and viruses and other harmful substances, resulting in a variety of infections such as eye infections, urinary tract infections, and respiratory tract infections. The site and type of infection, such as bacterial infection or viral infection, should first be determined before the newborn can be treated. Viral infections in newborns often induce cough, pneumonia and bronchitis, and usually require medication and possibly intravenous fluids in severe cases. Many antiviral medications are effective for these infections, and a detailed consultation with the physician should be made to determine the dosage of medication based on the site of the infection in the child. Bacterial infections in newborns may lead to urinary tract infections and bloodstream infections and eye infections, which can usually be treated with appropriate antibiotic medications. For local symptoms caused by bacterial infection, such as red and swollen eyes or red and swollen urethra and urinary frequency and urgency, attention should also be paid to local care, such as cleaning eye discharge frequently or keeping the pubic area clean and hygienic. Newborns have a weak immune system and it is difficult for them to heal themselves from more serious infections, so they usually need medication or intravenous fluids.