Children have been running nose may be rhinitis, may also be due to adenoid hypertrophy, sinusitis and other reasons. 1. Rhinitis: mainly due to viruses, bacteria, allergens and other causes of nasal inflammation, due to the stimulation of inflammation, the patient may appear nasal mucosa congestion, swelling, oozing and other symptoms, which can cause the phenomenon of a runny nose all the time. 2. Adenoid hypertrophy: mainly due to the recurrence of acute and chronic nasopharyngitis, as well as inflammation of neighboring organs such as nasal cavity, sinuses, tonsils can also affect the nasopharynx, stimulating adenoid tissue proliferation. Due to the stimulation of the hyperplasia site, the phenomenon of increased secretion can occur, thus causing the phenomenon of a runny nose all the time. 3. Sinusitis: mainly due to bacteria, viruses and other pathogenic bacteria caused by inflammation of the mucous membrane of the sinuses, due to the stimulation of inflammation, there can be a large number of pus or mucopurulent nasal mucus in the nasal cavity, thus appearing the phenomenon of the child’s nose has been running. It is recommended that children have a runny nose, go to the hospital in a timely manner, follow the doctor’s instructions for treatment, to avoid delaying the condition.