Metastatic foci in lung is a kind of condition when the tumor enters into advanced stage, and the specific treatment plan mainly includes surgery, radiotherapy, chemotherapy and targeted therapy. 1. Surgery: for single metastatic lesion that affects the surrounding tissues, local surgical resection can be chosen. 2. Radiotherapy: after the appearance of metastatic tumor, radiotherapy can be chosen, either extracorporeal radiotherapy or particle implantation. 3. Chemotherapy: chemotherapy can be chosen to deal with the metastatic tumor, and the commonly used chemotherapeutic drugs in clinic include cisplatin and so on. 4. Targeted therapy: if the primary tumor itself has gene mutation, targeted drugs can be applied to control it, and commonly used drugs include sorafenib and so on. When lung metastasis occurs, it is often accompanied by obvious symptoms such as chest pain, cough, discomfort, etc., and the pain is large, so it is necessary to seek medical treatment in time, and carry out standardized treatment under the guidance of clinicians, so as to improve the quality of life and alleviate the pain.