This invention discloses an appliance for assisting vocal cord closure to train vocalization, the appliance comprising: an inner arc plate, an outer arc plate and two oppositely disposed partition plates, the inner arc plate being opposite to the outer arc plate. The two partition plates are disposed between the inner arc plate and the outer arc plate, and an accommodation cavity is enclosed by the two partition plates, the inner arc plate and the outer arc plate. In the height direction, the accommodation cavity is separated into an upper accommodation cavity for receiving upper incisors and a lower accommodation cavity for receiving lower incisors. The both ends of opposite sides of the inner arc plates extend respectively away from the accommodation cavity. The both ends of opposite sides of the outer arc plate extend respectively away from the accommodation cavity, and are used to split the corners of the mouth. This invention provides a correction appliance for assisting vocal cord closure to train vocalization. When the appliance is being worn, the distance between the both sides of the mouth is enlarged and extended, which supports the separation of the corners of the mouth, promotes the passive closure of the vocal cord, and helps to achieve a healthy pronunciation and voice resonance.
