Sore throat, coughing, coughing and blood in sputum are mainly considered to be caused by local inflammation of the throat. If there is inflammatory stimulation, it is easy to cause congestion and edema of local mucous membrane, and there is also an increase in inflammatory secretion. In more serious cases, inflammation stimulates local mucous membrane and a small amount of blood cells will be exuded, so that the phenomenon of blood in sputum will appear. The main consideration is that it is caused by viral or bacterial infection, and mycoplasma infection may also cause this phenomenon. You can take appropriate oral medication to clear heat and remove fire, the more commonly used drugs are Blue Scutellaria oral solution, or use Pudilan oral solution, when the symptoms are more serious, you need to use anti-inflammatory, antiviral drugs. During this period, you also need to pay attention to your diet and drink more water.