One of the main reasons for treatment failure of nasopharyngeal cancer is recurrence. Once recurrence occurs, the treatment effect is very poor. Even if the recurrence treatment can bring the tumor under effective control, the cost is very high. This cost is not only the increase of treatment cost, but most importantly, the sequelae caused by recourse radiotherapy, which seriously affects the patient’s survival quality. It has been reported in the literature that more than half of the patients treated with recourse radiotherapy die from radiation sequelae. The occurrence of recurrence is closely related to the quality of the “first treatment”. Therefore, the most effective measure to prevent recurrence of nasopharyngeal cancer is to ensure the quality of “first treatment”. In order to ensure the quality of “first treatment”, the treatment standard of nasopharyngeal cancer must be strictly implemented, and it takes some time to implement this treatment standard. Many patients diagnosed as “nasopharyngeal carcinoma” in local hospitals ask doctors to start treatment immediately once they are transferred to higher level hospitals or oncology hospitals for consultation. Such a request is undesirable because it is very easy to misdiagnose and mistreat, just like the Public Security Bureau arresting a person without having evidence of crime, which can easily lead to complaints, false and wrong cases. A correct treatment cannot be achieved without an accurate diagnosis. A standardized tumor diagnosis should include both qualitative and quantitative parts. At present, the qualitative diagnosis of tumor mainly relies on biopsy, and this diagnosis should be made by the pathologists of higher hospitals or this hospital, which is why the doctors of higher hospitals require patients to bring pathological slides to the hospital for consultation. If the qualitative diagnosis is not yet available, starting treatment is not allowed. Otherwise, it is very easy to misdiagnose and mistreat, which will cause great damage to the patient. Quantitative diagnosis refers to clinical staging. The main purpose is to clarify the site, size, invasion range, and relationship with adjacent normal organs and tissues of the tumor through necessary examinations. This information is essential for the development of treatment plan and the outline of tumor target area. Some patients have already had MRI examination in local hospitals, but when they are referred to higher level hospitals, the doctors ask to redo it again, because the MRI done in local hospitals does not meet the requirements, such as the scope of scanning is not enough, the scope of tumor invasion is not clear, and the edge of the tumor is not displayed well. If the tumor target area is outlined based on these information, it is easy to cause the tumor to miss treatment and recurrence, which will definitely affect the treatment effect of nasopharyngeal cancer. To have a good gun, the target area should also be clear in order to hit all the targets. It takes time to diagnose and to make radiotherapy plan. As radiation therapy enters the era of precision treatment, the technology of treatment is different and the requirements of treatment have been significantly increased. The time required to complete a radiotherapy plan is now at least 100 times longer than before. Therefore, only when patients and doctors cooperate with each other and work together sincerely, it is possible to ensure the quality of “first treatment”, reduce recurrence and improve the treatment effect of nasopharyngeal cancer.