青少年一般在１４～１６岁进入变声期，这个时期是他们喉头、声带发育的阶段，其表现为：声音嘶哑、音域狭窄、发音疲劳、局部充血水肿、分泌物增多等。变声期一般为半年至一年。变声期保养嗓子，除了要注意科学合理地使用嗓子，不要让它太疲劳外，注意饮食方面的调理也至关重 Adolescents generally enter the voice change period of 14 to 16 years of age, this period is their throat, vocal cord development stage, its performance is: hoarseness, narrow range, pronunciation fatigue, local congestion and edema, increased secretions and so on. Varying period is generally six months to one year. Change voice period maintenance of the throat, in addition to pay attention to the scientific and rational use of the throat, do not let it too tired, pay attention to diet conditioning is also crucial