The significance of ki67 monitoring after tumor resection is not small. ki67 can monitor tumor recurrence, assess patient prognosis, and observe the effect of treatment. ki67 is an indicator used to respond to the proliferation rate of tumor cells. After resection of the tumor, if ki67 is elevated again, it often suggests that the tumor recurs after surgery. In addition, ki67 is used to assess the prognosis of patients and observe the treatment effect after tumor resection in clinic. After tumor resection, Ki-67 should be checked regularly for early detection of tumor recurrence and metastasis.