Calcified foci in the lungs are mainly a sign of healing inflammation in the lungs, commonly caused by tuberculosis infection of the lungs. The inflammation heals through immune function and medication, and most of them do not cause any harm to the body and usually do not require treatment. If the patient has mild calcification foci, it indicates that the patient has ischemia or hypoxia in the liver area and usually does not require special treatment, but rest and maintenance. If the patient has large calcified foci, the risk of cirrhosis is considered, and the patient should go to the hospital in time to determine the cause, which is mainly treated by tuberculosis surgery. Patients usually pay attention to indoor ventilation and maintain indoor environmental quality to avoid re-infection of the lungs.