Most people are often overwhelmed when they are diagnosed with tumor for the first time, this article briefly discusses what we should do when a tumor is found unexpectedly. Patients who have been diagnosed with cancer for the first time with a gastroscopy or colonoscopy result and are anxious often have a series of questions: Is this disease serious now? How long can I live with this condition? If I have surgery, do I need any other treatment? Will this disease recur and metastasize in the future? Sometimes it is impossible for doctors to explain patiently to every patient for half an hour, so that patients in the back of the line may not be able to get an appointment for months. We do science popularization and also introduce some common questions here. “Is this disease serious now? About how long can I live with this condition? If I have surgery, do I need any other treatment? Will this recur and metastasize later?” These questions are often unanswerable for first-time patients because the stage of the tumor cannot be determined yet, and the prognosis varies greatly with different stages. Modern medicine is concerned with the basis of treatment, and without detailed examination results, doctors have no way to give patients the answers they want. Sometimes the tumor is very small but metastasis appears early, sometimes the tumor is very large but distant metastasis has not yet occurred and can be removed surgically, so each person’s situation is different and should be treated specifically, so whether the tumor is found to have a chance of surgical treatment, whether it is suitable for surgery or whether it is chemotherapy should have accurate examination results. Therefore, whether a tumor is found to have a chance of surgery, whether it is suitable for surgery or whether it is suitable for chemotherapy should have accurate examination results. For example, after gastric cancer is detected by gastroscopy, CT examination should be done to see the depth of tumor infiltration, whether the tumor has invaded other organs and whether there are metastatic lymph nodes around the tumor, and if the tumor is detected by ultrasound or CT, biopsy should be taken to confirm the diagnosis of the tumor. Gastroscopy and colonoscopy are both cavity organs, divided into inner and outer layers. What is the condition of the surrounding lymph nodes? Are there metastases in the liver, lung or abdominal cavity? All these are closely related to the possibility of surgical treatment. If the tumor is still relatively small and limited, there is no unresectable distant metastasis before the value of surgical cure. Therefore, early stage and late stage of tumor cannot be answered by a gastroscopy, colonoscopy or ultrasound report card. After understanding the specific situation of the tumor, there is a way to carry out further treatment, instead of rashly doing surgery first. Is it better to operate as soon as possible?” Of course, if surgery can be done, it should be done as soon as possible, but we should also consider whether the patient is suitable for surgery. Generally speaking, if the tumor is confined to the primary site, it is better, and if there is no surrounding invasion or liver metastasis, it can be operated now. With the deepening of people’s understanding of solid tumors, the treatment of tumors is not a single mode of surgical resection. If the tumor cannot be completely removed, it is palliative surgery, which is not necessarily good for the patient. Therefore, some advanced patients may need to do chemotherapy first to make the tumor lower the stage and then fight for the chance of surgery. Pre-operative radiotherapy and chemotherapy are neoadjuvant treatments, which also aim to control or even cure the tumor more effectively. After the examination, the doctor will determine the condition of the tumor, such as liver metastasis of colorectal cancer, whether the metastasis of this liver segment can be radically removed at the same time, and finally determine the most suitable treatment plan. Of course, other conditions such as whether the patient’s heart and lung function is good or not, whether he can tolerate the surgery, whether his nutritional status is still bad (too poor will affect the post-operative recovery), and other issues will also be examined. Therefore, first-time cancer patients and their family members do not need to be busy and anxious about when to operate, but to carefully consult with relevant experts to understand the most suitable treatment plan for themselves is the most important thing. Learn to control emotion and handle calmly, and do a good job in humanistic care. Anyone facing such a diagnosis of cancer is a bolt from the blue, and it is more important to be rational and handle calmly at this time, and this is especially important for family members who are close to the patient. When we don’t understand something, we are more likely to feel panic. What we need to do is to reassure the patient, cooperate with the doctor and give the patient the most reasonable treatment.