Acute lower respiratory tract infections in children can be acute bronchitis, acute bronchitis, acute pneumonia, etc., which can appear chills and high fever, cough and sputum, chest pain, dyspnea and other symptoms. Children’s lower respiratory tract infections, because the lesion site for the lower, generally can appear obvious systemic symptoms, such as: chills, high fever, fatigue, etc., if the infection for the form of bacteria, can appear cough, cough sputum, etc.; if the infection is caused by viruses, can appear dry cough, sputum with blood and other manifestations. In addition, severe lower respiratory tract infections can even lead to respiratory distress. Therefore, children suffering from the above symptoms should go to the regular hospital in time, under the guidance of the doctor for treatment.