Children always have boogers may be caused by chronic nasal vestibulitis, chronic rhinitis, chronic sinusitis and other reasons. 1. Chronic nasal vestibulitis: repeated stimulation of nasal secretions on the nasal vestibular skin can cause inflammation of the skin follicles and accessory glands here, and children often rub their noses, pick their boogers and other passive manifestations. 2. Chronic rhinitis: when chronic inflammation of the nasal mucosa and submucosa occurs in children, a large amount of nasal secretion and swelling of the nasal mucosa will appear in the nasal cavity, and the secretion can be manifested as old boogers after crusting. 3. Chronic sinusitis: mostly caused by bacterial invasion of the sinuses sinusitis, nasal congestion, pus, headache and other symptoms, pus in the nasal cavity after the accumulation of crusts, often seen in small children with boogers old features. When children always have symptoms of boogers, it is recommended to go to the hospital in time for a systematic examination to clarify the diagnosis and cause of the disease.