Thin nasal mucous membranes in small children may be normal, or they may be caused by vitamin deficiencies, bad habits, and so on. It can be relieved by observation, vitamin supplementation, medication and correction of bad habits. 1. Normal phenomenon: As children are relatively small, the mucous membrane of the nasal cavity is not fully formed by growth and development. In this case, no special treatment is needed, as the child grows older, the mucous membrane of the nasal cavity will gradually become thicker. 2. Lack of vitamins: If the child’s body lacks vitamins, the mucous membrane of the nasal cavity is generally very weak, but also prone to bleeding. It is recommended that the child can eat more fresh vegetables, fruits to supplement vitamins, and at the same time can follow the doctor’s instructions in the surface of the nasal mucosa, coated with recombinant bovine basic fibroblast growth factor gel, can promote the growth of the nasal mucosa. 3. Bad habits: If the child has bad habits, such as frequently digging the nostrils with hands or hard instruments, it may also cause the child’s nasal mucosa to be thin. In this case, parents should help their children to correct the bad habits. If your child’s thin nasal mucosa fails to improve through the above methods, it is recommended to consult a doctor in time, under the guidance of the doctor, improve the relevant examination, clarify the cause of the disease, and symptomatic treatment.