一、忌烟酒。烟酒既会刺激咽喉又会使机体功能受损，应坚决戒除。二、要保持室内空气畅通，不要过于干燥，冬季取暖时地面可洒一些水，有条件的可使用加湿器，以保持空气湿润。三、避免过多的大声喊叫，特别是在讲课时，声音要由低到高，渐渐适应。四、要及时治疗鼻咽部、口腔? First, avoid alcohol and tobacco. Tobacco and alcohol both stimulate the throat will make the body function impaired, should be resolutely quit. Second, to maintain indoor air flow, not too dry, the ground in winter to sprinkle some water heating, conditional humidifier can be used to keep the air moist. Third, to avoid excessive loud shouting, especially in lectures, the sound from low to high, gradually adapt. Fourth, timely treatment of nasopharynx, oral?