Whether a child with a runny nose can heal itself depends on the specific condition and cannot be generalized. If it is caused by a cold, the edema of the nasal mucosa of the patient after the cold can lead to poor discharge of secretions in the sinuses, thus causing the patient to have a runny nose. The cold is a self-limiting disease, which can usually heal itself, and the symptoms of runny nose will gradually improve when the cold gets better. If the patient has a prolonged runny nose, a sinus CT examination should be performed to check whether there is any blockage of sinus orifices or foreign bodies such as polyps in the nasal cavity. If there is any of these conditions, the patient’s runny nose cannot be cured by itself and needs surgery. If acute sinusitis is the cause, in addition to the runny nose, the patient will also have headache symptoms, and can go to the hospital for sinus frontal and lateral radiographs or sinus CT examination. If it is determined to be acute sinusitis, you cannot wait for it to heal on its own and need active anti-inflammatory treatment, cephalosporin antibiotics are available for patients with no history of drug allergy, and local physical therapy can also be performed to promote the absorption of inflammation. After the appearance of the above symptoms, it is recommended that the patient drink water, eat more vitamin C-rich food and fruit, and pay attention to a light diet, eat easily digestible food, if necessary, you can take oral Chinese medicine to clear heat and fire.