If there is only a little blood in the sputum occasionally, this condition is usually not serious and may be due to pharyngitis, bronchitis, pneumonia, and so on. 1. Pharyngitis:It may be due to bleeding in the pharynx caused by pharyngitis, so that when coughing up sputum, there will be a situation with blood. This situation is generally not serious, in addition, there may be cough, pharyngeal pain and other symptoms, can be under the guidance of the doctor to take cefprozil capsules, cefixime tablets and other drugs for treatment. 2. Bronchitis:Inflammation of the bronchial tubes due to pathogenic infections such as bacteria, mycoplasma, etc. Inflammation stimulation leads to bleeding of the bronchial mucosa. It can be coughed up along with the sputum. Occasional blood in the sputum due to bronchitis is generally not serious, and can be relieved in a few days after treatment. It can be treated with azithromycin and cephalosporins. 3. Pneumonia:Inflammation of the lungs may damage the capillaries in the lungs, resulting in blood in the sputum when coughing. It can be treated with medicines to stop cough and resolve phlegm, such as Pneumococcus and Ambroxol. If the pneumonia is controlled. The symptom of blood in sputum will also disappear. Patients are advised to eat more fresh vegetables and fruits in daily life. Occasional blood is usually not serious.