The inferior turbinate is a separate bone fragment. On the lateral wall of the nasal cavity, there are three shell-like bone fragments arranged in a stepped pattern from the bottom to the top, reducing in size by approximately 1/3 from the top to the bottom, while their anterior attachment positions are in turn posterior, approximately 1/3 posteriorly called the superior turbinate, middle turbinate, and inferior turbinate, respectively. Both the superior and middle turbinates are part of the sieve bone, and only the inferior turbinate is a separate curved piece of bone that attaches to the medial wall of the maxilla and the vertical plate of the palatine bone. The inferior turbinate plays a very important role in nasal ventilation, and when the inferior turbinate is enlarged, it can seriously affect nasal ventilation, so it is usually called inferior turbinate enlargement when diagnosing chronic hypertrophic rhinitis in clinical practice.