Cancer recurrence is the root cause of most people’s failure in fighting cancer. Only a very small number of people’s cancer recurrence is late surgery, or after radiotherapy, the effect is poor and recurrence is inevitable. Many people’s cancer recurrence is not inevitable, it is a man-made tragedy. For the root cause of recurrence, the reasons for cancer recurrence are summarized as follows: 1. Cancer is found late, surgery cannot completely remove it, radiotherapy and chemotherapy cannot completely remove cancer cells; multiple lesions cannot be treated after recurrence. 2.After surgery or radiotherapy, they think they are fine, as long as they are in a good mood and exercise, they will be fine, and they are careless; these people do not remove the environment for cancer cells to breed in their body, plus after surgery or radiotherapy, their immunity decreases, resulting in cancer cells breeding again, which is the biggest factor of cancer recurrence. 3.After surgery or radiotherapy, psychological pressure, always feeling insecure and fear lead to further lowering of one’s immunity and psychological problems, and no drug will work, which is also the root cause of cancer recurrence in some people. 4.Many of those who survive surgery for more than 5 years feel that they are completely cured, so they start to indulge themselves, eating, drinking and playing still as before they were sick, and the sudden relaxation at this time gives cancer cells an opportunity to take advantage of it, and recurrence is also the reason for some of them. Many cancer patients have many physical problems after surgery, but they think that it is normal after surgery and they need to take their time to get well, but they do not know that they cannot get well without active treatment and conditioning, and these functions directly affect your physical condition. This is the reason why many people do not understand that the follow-up physical improvement and functional treatment of cancer is the key to fight against cancer, so they ignore such treatment and delay the recovery of their body and the best time to prevent the recurrence of cancer. Cancer is not a disease strictly speaking, but a systemic crisis of the body. To adopt the thinking of simple treatment to prevent a systemic crisis of the body is to take a slingshot and hit the plane, which cannot eliminate the crisis, which is also a factor of cancer recurrence. 7.After the surgery, some people do not have the money to continue the treatment anymore, which leads to the result of waiting for the fate. The above 7 contain most of the reasons, tumor patients need to avoid the above 7 reasons, cancer patients should not be paralyzed and should pay attention to the scientific recovery during the recovery period.