If the pathology is low grade bladder cancer stage Ta, it can achieve clinical cure, but it cannot achieve the purpose of radical cure. However, the oncogene may still be present in the body and may not be expressed yet. In case of recurrence or metastasis, surgery or radiotherapy or chemotherapy should be continued according to the condition of metastasis or recurrence. At present, medical technology cannot achieve genetic cure, that is, it cannot remove the cancer gene in the patient’s body. Even if the tumor visible to the naked eye or the tumor visible to the instrument is removed, the cancer cells latent in other parts of the body still cannot be detected. This may affect the patient’s life and health. After recurrence or metastasis, some patients have already lost the opportunity to operate again, so they cannot reach the state of complete cure, but can only achieve the purpose of clinical cure.