There are 3 main causes of nasal septal deviation: ① Congenital: It has been reported in the literature that some newborns, at birth, have a deviated nasal septum, and Zebra often finds that many children at a very young age already have a deviated nasal septum in their clinical work. (ii) Due to trauma: When learning to walk, limb collisions during sports, and nasal trauma from various causes can lead to nasal septal deviation. ③Due to development: The nasal septum mainly consists of 2 bones and 1 cartilage. During development, the hardness, toughness and growth rate of each bone vary, and deviation can also occur gradually. Bamboozled In our work, we found that certain adolescents who have been seen for a long time before and after puberty will gradually develop deviated nasal septum. As for the cause of each septal deviation, it is often difficult to determine accurately due to the lack of long-term observation and exact medical history. However, the cause of septal deviation is not necessarily related to surgery or not, so there is no need to investigate deeply. The reason why there is a deviated septum but no nasal congestion is because the regulatory function of the mucosa of the inferior turbinate is still in the compensatory stage. Therefore, nasal septal deviation can exist for a long time, but may not necessarily have rhinitis, and can be temporarily not operated. However, if the septal deviation is accompanied by nasal congestion, rhinogenic headache, recurrent rhinorrhea, and purulent discharge, it is often necessary to undergo surgery. In conclusion, certain septal deviations can be operated without surgery, but not all septal deviations do not require surgery.