Cold, cough and blood inside the sputum are usually not very related because blood inside the sputum probably comes from the pharynx, that is, there is congestion and edema in the pharynx, and in the process of coughing, the mucous membrane of the pharynx ruptures and capillaries bleed due to the stimulation and impact of high-speed airflow on the pharynx. The amount of this blood is usually relatively small, so it can be relieved by giving only symptomatic treatment to stop coughing and expectoration. Therefore, cold, cough and blood inside the sputum only need to be given compound cold medicine for treatment, such as using compound aminoglutethimide tablets and phenomethamine tablets for relief. However, if there is blood in the sputum continuously, it is necessary to consider the possibility of complications of lower respiratory tract infections, such as bronchitis and pneumonia, and to improve the chest X-ray or CT examination of the lungs for clarification.