The following factors are related to the hoarseness of the voice caused by the cold: Firstly, the cold is mostly an inflammatory reaction caused by viral infection of the upper respiratory tract, and the patient usually suffers from obvious pain and discomfort in the throat, especially when laryngitis and vocal fold infection are formed, the patient may have obvious hoarseness and sore throat. Secondly, when the virus invades the throat, especially the vocal cords, the mucous membrane of the throat is edematous and congested, which also affects the articulation of the vocal cords, resulting in hoarseness. In addition, if a cold causes a patient to cough violently, especially after a cold, or if the throat itches and stimulates the patient to cough violently, it will also aggravate the damage to the throat and cause hoarseness. Therefore, if a patient has a hoarse voice, he should be treated with throat laxity, cough relief and cold medicine, and if necessary, nebulized inhalation treatment.