Patients undergoing targeted therapy, such as lung cancer patients, are not recommended to stop the drugs hastily during the application of targeted drugs, because once there is non-medical discontinuation, it may cause tumor recurrence, or rapid tumor progression, or even hyper-progression in some patients. Hyper-progression means that once the targeted drugs are discontinued, the tumor can rapidly recur and metastasize throughout the body, making the patient’s body condition rapidly deteriorate and weaken, and the body quickly go to failure, and produce the ultimate very bad results. Therefore, targeted drugs should not be discontinued hastily during the treatment process. Whether you need to stop the drug, it is recommended that you must consult a professional hospital specialist and not listen to outside advertisements. For the discontinuation of medication due to medical factors such as rash, diarrhea or liver and kidney damage and other drug side effects, the doctor will give a reasonable treatment or remedial application plan. In contrast, patients who discontinue drugs on their own will show rapid tumor progression within a month, resulting in more losses than gains.