The symptoms and changes of a cold are primarily determined by the infecting virus. Clinically, it is mainly divided into the common cold and influenza. The common cold is mainly caused by infections of rhinovirus, adenovirus, and pharyngovirus, leading to symptoms such as nasal congestion, runny nose, watery eyes, sneezing, coughing, and sore throat. The other type of cold refers to influenza, which is caused by influenza virus or parainfluenza virus infections, primarily manifested by muscle soreness in the limbs, fatigue, sore throat, and compared to the common cold, the ear, nose, and throat symptoms are relatively mild.