Malignant tumor is a common disease that threatens human health and has been ranked as one of the top three leading causes of death among human diseases. Despite the efficacy of traditional chemotherapy for tumors, clinical studies on the development of cytotoxic drugs or new combination regimens have shown that the efficacy of either single or combination drugs is at a plateau, making it difficult to achieve breakthroughs. The molecular targeted therapy (also called biological missile) of tumor is to design corresponding therapeutic drugs at the cellular molecular level, targeting the defined cancer-causing sites, and the drugs entering the body will specifically select the cancer-causing sites to combine with each other to cause the specific death of tumor cells without affecting the normal tissue cells around the tumor. This kind of targeted treatment method has pointed out a new direction for tumor treatment, and some advanced tumor patients have achieved miraculous results after this kind of treatment.