Dry and itchy throat and foreign body sensation are the clinical symptoms of acute laryngitis. Acute laryngitis is an acute catarrhal inflammation of the laryngeal mucosa, so the first step in preventing dry and itchy throat is to prevent acute laryngitis, especially teachers, singers, actors, announcers and other professions should pay more attention. Acute laryngitis is mostly secondary to upper respiratory tract infections, reducing the chances of catching a cold may be able to avoid laryngitis. Prevention of dry and itchy throat to do the following: 1, appropriate physical exercise, maintain a healthy regular routine, ensure adequate sleep and rest, adjust the physical state and a good state of mind so as to improve their overall immunity to avoid colds. 2, avoid excessive use and abuse of voice. 3, light diet, avoid tobacco and alcohol stimulation, avoid dry mouth, should drink more water, light diet, often eat vegetables and fruits, avoid spicy stimulating diet, such as excessive consumption of chili peppers, strong tea, strong coffee, carbonated beverages, fried food, puffed food and dried fruit food, too sweet and salty foods such as chocolate, candy and so on. 4, keep indoor air circulation, moist, avoid cold and high heat temperature stimulation; avoid contact with dust, irritating gas and harmful gases, poor air quality and other adverse stimuli to the laryngeal mucosa. 5, try to avoid contact with allergens that cause chronic allergic laryngitis. Avoid allergic foods. 6, active treatment of upper respiratory tract infections and neighboring foci such as sinusitis, pharyngitis, bronchitis and so on.