Metastasis of bile duct cancer to lungs in advanced stage will cause cough, sputum, hemoptysis and other symptoms due to tumor invasion to lung tissues and local inflammatory reaction. With the growth of metastasis to lungs, tumor tissues will compress normal lung tissues and produce large amount of malignant pleural effusion, which will cause patients’ chest pain, respiratory difficulty and respiratory failure and other symptoms. Late metastasis of bile duct cancer to lungs belongs to the advanced stage of malignant tumor, which can also be accompanied by systemic manifestations such as weight loss, malnutrition, fatigue, jaundice, etc. Due to the poor basic condition of patients and metastasis of tumor, most of the patients in this stage have lost the chance of surgery, and comprehensive treatment methods such as radiotherapy, chemotherapy, and targeted drug therapy are mostly adopted to help patients alleviate the symptoms and prolong the survival period. Patients with advanced cholangiocarcinoma metastasis to lungs should go to the hospital in time and undergo active treatment with the help of doctors, which is expected to prolong the survival period of the disease.