Multiple bladder cancer can be treated to achieve clinical cure, but not complete cure. The so-called clinical cure is to remove the tumor from the patient’s body through surgery. However, there may be latent cancer cells in the body, which may recur or metastasize to other parts of the body later. At present, it is not possible to cure the tumor completely, but only to choose chemotherapy or radiotherapy after surgery according to the pathological results to reduce the probability of metastasis or recurrence as much as possible. However, once the diagnosis of bladder cancer is confirmed, after treatment, lifelong follow-up checkups are needed to detect metastases or recurrence foci as early as possible for early intervention and treatment. Some patients with multiple bladder cancers, but with superficial invasion, can be treated with bladder preservation by bladder lesion electrosurgery. However, regular postoperative bladder irrigation chemotherapy is required to prevent recurrence of the tumor elsewhere in the bladder. Even after bladder irrigation chemotherapy, the probability of recurrence can only be reduced, but not completely eliminated. Therefore, it can only achieve a state of clinical control, but not a state of complete eradication and cure.