Hoarseness refers to pathological changes in a person’s voice, including abnormal tone, timbre, and volume. Acute hoarseness occurs suddenly and within a short period of time. If it is longer and exceeds two weeks, such as a sore throat, more phlegm, and remission followed by more words again, a laryngoscopy is needed at the hospital. Long-term smoking and drinking patients with hoarseness should be alert to malignant lesions of the vocal cords, such as laryngeal cancer, hypopharyngeal cancer, etc. Patients with upper segment esophageal cancer and central lung cancer have malignant tumors in the esophagus and lungs that can compress the laryngeal recurrent nerve that governs the movement of the vocal cords, resulting in hoarseness, and need to be alert.