Cancer recurrence is more likely to occur around 1 to 3 years after the first treatment, and the chance of recurrence after 5 years will be very small, and the exact time varies from person to person. Generally speaking, the peaks of cancer recurrence are within six months after the first treatment, especially about three months after surgery, and two years after the first treatment. After that, the chance of recurrence decreases with time. According to relevant statistics, the chances of cancer recurrence and metastasis are about 90% within 3 years and about 10% within 5 years. If the cancer does not recur within 5 years, the chance of recurrence after 5 years is very low. There is no obvious signal for cancer recurrence, and cancer patients should have timely and regular follow-ups. Once abnormalities are detected, timely intervention and treatment should be provided within a short period of time to slow down the progression of the disease. In order to reduce the recurrence rate of cancer, patients should carry out standardized and continuous treatment under the guidance of professional physicians, and at the same time, develop good living habits, quit smoking and drinking, refrain from eating spicy and stimulating food, have balanced nutrition, take appropriate exercise, and maintain an optimistic mindset.