Thick nasal discharge in children is usually seen in the late stage of cold, sinusitis, nasal polyps and nasal foreign bodies, and it is recommended to choose a regular hospital for consultation and treatment. Common causes and treatment 1, late cold: the upper respiratory tract viral infection late secondary to bacterial infection, nasal mucosa due to inflammatory reaction, there is a large amount of secretion exudation, resulting in thick nasal mucus, it is recommended to use antibiotics as prescribed by the doctor; 2, sinusitis: related to bacterial infection, nasal tract narrowing and nasal trauma, the treatment is mainly anti-infection, can be prescribed to use antibiotics, such as amoxicillin clavulanic acid potassium; 3. Nasal polyps and nasal foreign bodies: If the nasal cavity is blocked by foreign bodies or polyps, resulting in secretions that cannot be discharged in time, there is thick nasal mucus, which can be accompanied by odor. It is recommended to seek medical treatment in time to remove the foreign body. Children over two years old can use nasal spray hormone to reduce the growth of polyps, such as mometasone furoate, or surgical treatment. Attention usually should 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. Open the windows frequently to keep the indoor air circulation.