Causes of pus runny nose in children include acute rhinitis, acute sinusitis and other diseases, which can be relieved by medication. 1. Sinusitis: is a variety of pathogenic microorganisms caused by sinus infection, mainly manifested as nasal congestion, runny nose, headache and other symptoms, can be targeted selection of antibiotics such as metronidazole and other treatments, in addition to the addition of budesonide and other hormonal nasal spray treatment as prescribed by the doctor. Nasal negative pressure suction, sputum suction and other care can also be given. 2. Rhinitis: rhinitis treatment is similar to sinusitis, you can follow the doctor’s instructions to be sea saline nasal spray, if necessary, can be added with mometasone furoate than spray treatment. If the runny nose is more obvious, can follow the doctor’s prescription short-term addition of ephedrine nasal drops and other drugs. There are many reasons for children to runny nose, such as upper respiratory tract infections can also lead to the baby similar symptoms, should be timely to the hospital, complete blood tests and other tests to determine the cause of the disease, under the guidance of the doctor to be targeted treatment.