Children’s rhinitis can cause children to get up in the morning old yellow snot, other diseases can also cause children to get up in the morning old yellow snot, such as sinusitis, and other diseases, so the first need to clarify the cause of the disease, and then for the cause of the treatment. 1. rhinitis: rhinitis is an inflammatory disease that occurs in the nasal mucosa, yellow purulent nasal discharge, may be caused by bacterial infection and other factors, if the child suffers from rhinitis, the treatment can be used to clean the nasal cavity with sea saline, if necessary, can be negative pressure nasal replacement therapy, for bacterial infections, but also the use of amoxicillin and other drugs as prescribed by the doctor for anti-infective treatment. 2. Sinusitis: sinusitis is a bacterial infection caused by the occurrence of inflammatory diseases in the sinuses, the disease can lead to children to get up in the morning the symptoms of the old yellow nasal discharge, the treatment can be used to reduce the inflammatory reaction of the nasal mucosa of the budesonide and other drugs, the use of hydroxymethoxylin hydrochloride nasal drops, but also the use of metronidazole, tinidazole, and other drugs to fight anaerobic infections. In addition to the above diseases, other diseases can also lead to the symptoms of children waking up in the morning with yellow nasal discharge, it is recommended to consult the doctor as soon as possible, improve the nasopharyngoscopy and other related examinations, please ask the doctor to deal with.