Children with runny nose, generally seen in the late stage of the cold, sinusitis, rhinitis and other diseases, it is recommended to choose a regular hospital for consultation and treatment. Common causes and treatment 1, late cold: various viruses and bacteria can cause children’s colds, inflammatory response can lead to children’s runny nose, early clear nasal discharge, late cold will appear a large number of purulent secretions exuded, resulting in runny nose, generally about a week can be self-healing, if the condition is serious under the guidance of doctors can apply penicillin, cephalosporin and other drugs; 2, sinusitis: with bacterial infection, nasal tract narrowing The treatment is mainly anti-infection, and antibiotics such as penicillin and cephalosporin can be used according to the doctor’s instruction; 3, rhinitis: the nasal discharge turns from watery to sticky in the late stage of rhinitis. The mucus becomes pus nasal discharge when it enters the recovery period, mixed with damaged mucosal epithelial cells, multinucleated leukocytes, etc. Virus-induced rhinitis requires symptomatic treatment, nasal wash with saline, application of budesonide nasal spray; bacterial-induced rhinitis, application of penicillin, cephalosporin and other anti-infective drugs; allergic rhinitis can be applied to antihistamines, such as loratadine; 4. Other: acute maxillary sinusitis, chronic maxillary sinusitis, adenoidal hypertrophy blocking the posterior nostrils, pediatric nasal foreign body for a longer period of time may also appear such symptoms. It is recommended to seek medical attention and treatment according to the cause. Attention should usually pay attention to children to keep warm, bathing, sweating in time to dry, to prevent cold induced disease; such as family members with colds, should be isolated from children, cold epidemic season try to avoid going to crowded places; often open the window ventilation, keep indoor air circulation.