Before mediation, the patient was diagnosed with small-cell lung cancer on the left lung. Due to its proximity to blood vessels, surgery was not possible, and only chemotherapy was administered. During this period, a chest CT scan suggested possible lymph node metastasis of lung cancer. The treatment in the hospital was discontinued and CHA for injection alone was subsequently started without the use of other drugs. After 3 months of medication, CT scans showed the lymph node metastasis disappeared. After 7.5 years of medication, the patient’s blood biochemical indicators remained largely normal, tumor markers stayed within the normal range, the patient’s condition remained stable, the patient’s quality of life was good, and the patient was indistinguishable from that of a healthy individual. The lifetime has extended for 13 years.