The common causes of mute voice due to hot weather are dryness, excessive use of voice, laryngitis, etc. Common treatments include drinking more water, gargling, and medication. 1. Dryness: If hot weather is accompanied by dry air and low humidity, it can cause a dry throat and cough, leading to hoarseness. You can use a humidifier in the house to increase the indoor humidity, drink more water, etc. to relieve the symptoms. 2. Excessive use of the voice: If you speak for a long time in hot weather and use your voice excessively, it will cause throat congestion, swelling, hoarseness and other symptoms, which can be relieved by resting under normal circumstances, and if the condition is serious, it can be treated with nebulized inhalation of drugs such as budesonide. 3. Pharyngitis: If the existence of pharyngitis and other throat diseases, hot weather can also be triggered, causing hoarseness, sore throat and other symptoms, available borax solution or warm saline gargle, etc., clear bacterial infection can be treated with antibiotics such as cephalosporin. All of the above drugs should be used under the guidance of a doctor. If the mute voice can not be relieved or accompanied by other discomforts, you should go to the hospital in a timely manner to identify the cause and targeted treatment.