Sinusitis in children is a relatively common ear, nose and throat symptom, most often caused by a child’s body immunity is reduced, so that viral or bacterial infection caused by the body. It is usually very serious and can lead to complications of varying degrees of severity. If a child’s sinusitis remains bad, it may lead to lower respiratory tract infections, depression, memory loss and other symptoms. In severe cases, it may also cause complications such as periorbital cellulitis, retrobulbar optic neuritis, epidural abscess, purulent meningitis, and so on. Therefore, if the child’s sinusitis has been bad, should go to the hospital in time for nasal endoscopy, sinus CT, maxillary sinus puncture irrigation and other tests to confirm the condition, as soon as possible to carry out targeted treatment to avoid the impact on the child’s physical health.