The phenomenon of voice change after a cold indicates the occurrence of acute laryngitis caused by a cold, and only then will the phenomenon of voice change occur. The first thing to do is to go to the nasolaryngology department and let the doctor check to see if there is indeed laryngitis. If it is indeed laryngitis that causes the voice to change, you need to use anti-inflammatory drugs for treatment, and it is recommended to take Pudi Blue Anti-inflammatory Oral Liquid or Blue Scutellaria Oral Liquid orally. If elevated white blood cells occur in the routine blood test, it means that the laryngitis is caused by bacterial infection and needs to be treated with antibiotics at the same time. Penicillin without allergies can be taken orally with amoxicillin clavulanic acid potassium. If there is an allergy, adults can use levofloxacin for anti-inflammatory treatment. In addition, be sure to nebulize inhaled glucocorticoids to relieve the symptoms of laryngitis, the best effect is the use of glucocorticoids, and the side effects of local medication is also relatively small, you can use a nebulizer nebulized inhalation budesonide to relieve the phenomenon of voice dumbing down or change.