General use of nasal aspirator on the baby will rarely produce harm, but sometimes the use of inappropriate may also cause the following injuries: First, the specification size of the nasal aspirator is not right, because the nasal aspirator is strictly in accordance with the patient’s age to match, if the child is very small, but with a large child’s nasal aspirator or a very large child with a small child’s nasal aspirator, then due to the size of the nasal aspirator is not right, may cause nasal mucosa, including nasal vestibule of localized damage It is easy to induce mucosal bleeding, ulceration, etc. Secondly, the application of nasal aspirator must be properly disinfected, if the nasal aspirator is not properly disinfected, the surface will be easy to breed bacteria or viruses, and it is easy to induce the patient to have nasal cavity local erosion when applying it again, which may include nasal vestibulitis, rhinitis and other diseases. At the same time, when applying the nasal aspirator in the clinic, the action should be gentle and avoid roughness.