Nostrils don’t usually get bigger if you pick your nose often. The tissue structure of the human nose is a soft tissue type with good elasticity and extensibility, and will not become larger as a result of frequent picking of the nostrils. However, frequent picking of the nostrils may lead to localized mucosal damage, infection and respiratory tract infection. 1. Local mucous membrane damage and infection: frequent nose picking can easily lead to damage to the mucous membrane in the nasal cavity, triggering local infection, manifested as redness and swelling of the skin in the nasal vestibule, crusting, pain in the nasal bone, and pus secretion and other symptoms. 2. Respiratory tract infection: nasal hair can filter dust and bacteria in the air, if often picking the nostrils, will be in the nostrils of the nose to pick off the nasal hair, the lack of nasal hair protection, leading to part of the dust and bacteria into the respiratory tract, resulting in respiratory tract infection. It is recommended to pick the nostrils less, if the nose is slightly uncomfortable you can use physiological saline to clean the nostrils, if the nose is itchy, pain or increased secretion and other symptoms, it is recommended to go to the hospital for examination and treatment in a timely manner.