Whether the targeted drug is taken orally or by infusion needs to be judged according to the type of drug and the type of disease, and both ways exist in clinic. 1. Oral drugs: for non-small cell lung cancer patients, oral targeted drugs can be chosen according to genetic testing, and commonly used drugs include afatinib, gefitinib, anilotinib, apatinib and so on, all of which can achieve the purpose of controlling the growth of tumors or killing the tumors. 2. Injectable drugs: For patients with colorectal cancer, patients can be injected with bevacizumab under the guidance of doctors to carry out targeted therapy, and bevacizumab enters into the patient’s body through the way of vein. In the process of targeted drug treatment, genetic testing should be carried out and the corresponding medication should be administered according to the doctor’s instruction to avoid serious harm to the body.