At present, it is not uncommon to receive non-standard treatment in tumor treatment because of the limitations of physicians’ knowledge. For example, the first thing that surgeons think of is to do surgical resection for patients. Because of this, many of my patients have been “wronged” by the knife. I had a 60-year-old male patient from northern Jiangsu who was admitted to the local hospital for a coughing and bleeding checkup, and was admitted to the thoracic surgery department, where the doctor told him that he had lung cancer and that it was in an advanced stage and that he had to undergo surgery immediately. The patient accepted the doctor’s words without any doubt. However, after the surgery, the patient found that the lymph nodes in his neck were getting bigger and bigger. One month after the surgery, the patient was transferred from an outside hospital to our department, and the swollen lymph nodes in the neck were examined because the tumor had metastasized to the neck. In fact, this patient’s tumor had already metastasized when he underwent surgery. According to the principle of staging treatment, surgery is not the main treatment for patients with advanced tumor like him, but because the local doctor blindly believed that the tumor could be removed without considering the distant lymph node metastasis, the treatment was counterproductive, because during the recovery stage after surgery, the patient could not receive chemotherapy, and the metastatic tumor would break out, so The patient will obviously feel the enlarged lymph nodes. This is also true for gastric cancer. Among the patients I have treated, many advanced gastric cancers were treated by “on/off” surgery, and the patients received a knife for nothing. After the surgery, the patient recovers for a period of time before receiving chemotherapy, during which the tumor may develop rapidly. Therefore, I suggest that patients should not rush to the surgeon for surgery after gastroscopic examination, but should first come to the oncology clinic for some necessary examinations, such as enhanced CT of chest and abdomen, to make a judgment on the disease, and then decide whether to operate first or to do other treatments first, which is a scientific and reasonable method. The purpose of surgery is to cure the tumor, but once distant metastasis occurs, the role of surgery will be greatly reduced or will bring negative effects, in this case, rash surgery will only accelerate the patient’s death, so for patients with middle and late stage tumor, we need to evaluate the disease before surgery, never operate blindly.