The appearance of sputum and nasal obstruction, more than 85% of the cases are due to viruses that cause upper respiratory tract infection, viruses stimulate the body to inflammatory response, local inflammatory cell infiltration in the upper respiratory tract, producing a large number of inflammatory factors, resulting in swelling of the upper respiratory tract, secretions, manifested as nasal congestion, sputum. Anti-viral drugs and cold medicines can be taken for treatment. Anti-viral drugs include anti-viral oral solution, oseltamivir, etc., and common cold medicines include busulfan anti-inflammatory oral solution or blue scutellaria oral solution, etc. In addition, you can also take medicines to relieve the symptoms, such as aminogalactone capsules or vitamin C silver warp tablets, cold and flu granules, or aminogalactone pseudo-lax dispersible tablets, Tylenol, etc., which are effective in relieving the symptoms of upper sensation. If you cough up yellow sputum, it means combined with bacterial infection, you need to use antibiotics for treatment.