Hoarseness and vocal effort may be caused by physical and chemical stimulation of the throat, acute pharyngolaryngitis, chronic pharyngitis, vocal cord nodules, vocal cord polyps and other reasons. 1. Physical and chemical stimulation: prolonged exposure to harmful gases, heavy smoking, dust stimulation, causing hoarseness and pain in the throat, so the voice is hoarse, vocal effort. 2. Acute pharyngolaryngitis: acute inflammation of the throat causes congestion and edema, resulting in hoarseness, vocal effort, accompanied by throat pain and other symptoms. 3. Chronic laryngitis: chronic inflammation of the throat, resulting in local tissue congestion, causing hoarseness, vocal effort, and foreign body sensation. 4. Vocal cord nodules: prolonged improper use of the voice, a lot of smoking and drinking and other reasons lead to the vocal cord long nodules, which can be manifested as hoarse voice, vocal feeble symptoms. 5. Vocal polyps: The mucous membrane in the vocal folds rises to form vocal polyps, which can manifest as hoarse voice and vocal effort. It is recommended to consult a doctor in time to find out the cause of the disease and treat the cause.