Clinical Research Directory

Inclusion Criteria: 1. Patients diagnosed with olfactory disorder when TDI score was less than 30.75. 2. Patients would perform Sniffin' Sticks examination. 3. Voluntarily sign the informed consent form 4. Able to undergo olfactory training and participate in follow-up visits Exclusion Criteria: 1. Smoking 2. Combined with chronic diseases, such as hypertension, diabetes, bronchopneumonia, chronic obstructive pulmonary disease, etc. 3. Those who have taken oral glucocorticoids, antibiotics, anti-leukotrienes, and antihistamines within four weeks will be excluded. 4. Patients who cannot tolerate olfactory function testing and treatment 5. Severe coexisting diseases: such as malignant tumors, life expectancy \<2 years 6. Patients who are pregnant or planning to become pregnant 7. According to the researcher's judgment, the patient is unable to complete this study or cannot comply with the requirements of this study (such as memory or behavioral abnormalities, depression, heavy drinking, past breach of contract)