Inflammation of the respiratory tract is a colloquial term that is medically divided into inflammation of the upper respiratory tract and inflammation of the lower respiratory tract. The upper respiratory tract includes the mouth, nose, throat and pharynx, and the lower respiratory tract includes the trachea and lungs. The specific symptoms are as follows: 1. When the upper respiratory tract is inflamed, symptoms such as nasal congestion, runny nose, sore throat and cough will occur; 2. When the lower respiratory tract is inflamed, symptoms such as fever, chest pain, cough, cough and even hemoptysis will occur. Inflammation of the upper respiratory tract is usually what people call a cold. A cold is medically known as an acute upper respiratory tract infection, and the main symptoms are nasal congestion, runny nose, cough, sneezing, fever and other symptoms. Most patients in this category do not need antibiotics, and symptomatic treatment is sufficient. However, if it is a lower respiratory tract infection, whether it is bronchitis or pneumonia, such as fever, cough, coughing yellow pus sputum, hemoptysis and chest pain, anti-infective treatment should be given.