The reasons why two nostrils are not the same size may clinically include the following: 1, embryonic development factors: may lead to the two nostrils are not the same size; 2, rhinitis, sinusitis: if patients repeatedly pick their nose and rub their nose due to rhinitis, sinusitis and other reasons, so that the shape of the nose has changed, may lead to both sides of the nostrils are not the same size; 3, nasal trauma: some patients due to nasal trauma change, nasal wing If the nostrils are not affected by ventilation or smell, there is no need to deal with it clinically, if it seriously affects the appearance and self-confidence, the nostrils can be plastic surgery. The surgical incision is relatively hidden. After surgery, keep the wound dry and clean, eat a liquid diet, pay attention to the nose after surgery to avoid external trauma, avoid collisions, do not engage in strenuous activities, such as running, basketball, etc., avoid sleeping on your stomach, do not wear framed glasses, avoid squeezing the nose, try not to play with cell phones, be careful of cell phones smashed on the nose.