Male voice change is a natural physiological phenomenon during puberty, belonging to one of the manifestations of male secondary sexual characteristics, the signs of which include hoarse voice, inability to produce high pitched sounds, increased oral secretions and fewer words and other symptoms. 1. Hoarseness: most boys will have this performance, not any part of the damage caused by the hoarseness, but the normal from the boy’s voice to the adult male transformation of the lower voice. 2. Inability to reach the high notes: the child’s voice is usually sharp, but after puberty the laryngeal knots protrude and the vocal cords are stretched, so it is usually not possible to reach the high notes. 3. More secretions: When you are in the period of voice change, your vocal cords are prone to hemorrhage and swelling, which will lead to more secretions. 4. Fewer words: during this period of speech, it is easy to feel tired and weak, so it will lead to some boys to reduce the number of speeches. The boys must use their voices wisely and eat less stimulating food.