Targeted therapy is the treatment of targets prone to gene mutation, thus inhibiting the development of tumor. The advantages of targeted therapy are as follows: 1. No need to be hospitalized: you can take the medicine orally at home, contact the doctor for feedback at any time, and adjust the dosage in time to avoid long-term repeated hospitalization, which can reduce the patient’s burden; 2. Short treatment cycle, no need for repeated examination, and can avoid the side effects of chemotherapy.