Normal nasal turbinates are reddish in color, with three turbinates distributed on the lateral wall of each side of the nasal cavity: upper, middle and lower. Physical examination reveals that the mucosa of the nasal cavity and the turbinate mucosa are light red with a smooth surface and a gap between them and the nasal septum. In the case of turbinate hypertrophy, the mucous membrane is swollen, purplish-red, with an uneven surface, nodular or mulberry-shaped, especially in the anterior part of the inferior turbinate and the free edge. The depression is not obvious when the probe is lightly pressed, and there is a hard and solid feeling when touched.