If there is always yellow nasal mucus in the nose and it is sticky, you can usually go to the emergency department, the general medicine department, the respiratory medicine department and the ear, nose and throat department. 1.If there is always yellow nasal mucus in the nose and it is accompanied by obvious high fever, the body temperature is above 39℃, accompanied by significant respiratory difficulty, weakness and lack of oxygen, or the arterial oxygen saturation is significantly reduced, you need to go to the emergency department immediately to relieve the respiratory difficulty caused by yellow nasal mucus in the nose. 2. If there is yellow nasal mucus in the nose for a long time and it has formed crust in the nasal cavity with high viscosity, you can go to the ENT department for systematic treatment. 3. If there is yellow nasal mucus in the nose accompanied by obvious cough and cough, you can go to the respiratory medicine department for symptomatic treatment or the general medicine department for treatment.