Upper respiratory tract infections are the most common diseases, and the elderly and children are the most susceptible to colds in autumn and winter. The clinical manifestations of upper respiratory tract infection are fever, nasal congestion, runny nose, cough, etc. The aggravation of the disease can cause lung infection, and the treatment is mainly symptomatic. Note: Pay attention to weather changes when cooling down and add clothes to your baby in time, especially pay attention to abdominal warmth, drink more warm water, eat more food rich in vitamin C, and enhance your baby’s resistance with appropriate aerobic exercise. Do not take off clothes immediately when sweating, and do not stand in the vent to avoid getting cold. Pay attention to the child’s fever do not randomly use drugs, especially antibiotics, need to be under the guidance of a doctor to use drugs, avoid the abuse of antibiotics. Once treated with anti-infection, pay attention to some oral micro-ecological preparations to reduce the side effects of antibiotics and shorten the course of the disease.