Vocal change is mostly a change in voice that occurs during adolescence and is not exactly the same for males and females. Voice change in boys generally begins at the age of 14-16, and most children complete the change around the age of 18. Girls develop earlier, usually starting around 13-15 years old, and begin to change their voices at the latest at 16 years old, and also completely change their voices around 18 years old. The organism undergoes voice change as a transition from childhood to adolescence. During the time of voice change, we should pay attention to a light diet, eat more fresh vegetables and fruits, don’t use our voice hard, don’t eat spicy diet, don’t eat puffed food, don’t eat burnt and pickled food, and eat less raw and cold food. At the same time to develop good habits, do not smoke, especially do not smoke second-hand smoke, do not stay up late. Also pay attention to a certain amount of physical exercise, about 3 times a week, about 30 minutes of moderate intensity exercise to improve the body’s resistance, do not randomly abuse the voice, which is very beneficial to voice change. The voice is basically fixed after about 18 years of age, whether male or female, in the process of voice change, must follow the above requirements.