Unable to improve. The function of tongue depressor is mainly to improve the abnormal tongue position and occlusal relationship by applying slight force and adjusting the tongue position. Correct tongue position is helpful to adjust the growth and development of facial muscles and jaws. The problem of adenoid face refers to the disharmony of facial appearance caused by mandibular retraction, flat cheekbones and long mandible. For the problem of adenoid face, it is necessary to comprehensively consider comprehensive treatment methods such as orthodontics and jaw correction.