Nostrils will not get bigger and bigger because they are formed by skin, muscle layer, nasal cartilage and mucous membrane with certain elasticity and ductility, and digging will not lead to the change of nostril shape. 1. The reason for the patient’s repeated picking of the nostrils is mainly nasal itching or foreign body sensation, which may be due to nasal vestibulitis or excessive nasal hairs, etc. The patient’s nostrils may be dug up repeatedly because of the itching or foreign body sensation. Erythromycin ointment can be used to apply to the nostrils; if the nasal hairs are too long, it is recommended to trim the nasal hairs with regular tools. 2. But if it is due to dry rhinitis or atrophic rhinitis, resulting in a large amount of nasal secretions, dry crust, you can use nasal saline for nasal rinsing. At the same time, you can follow the doctor’s instructions to use menthol oil or cream for nasal application, to maintain the moisture of the nasal mucosa, you can also take multivitamins for treatment, such as vitamin C, glutamine and so on. The nostrils will not get bigger the more you dig, but you should also avoid this habit to avoid causing localized infections.