The life expectancy of high-grade bladder cancer cannot be clearly determined, and it should be judged according to the patient’s personal physical condition, the severity of the disease, the hospital’s treatment plan and other reasons. In the early stage of high-grade bladder cancer, radical resection can be done through surgery and chemotherapy and radiotherapy can prevent recurrence of the tumor, and the prognosis is generally better. If the disease has reached the middle or late stage, and there is no surgical indication, the patient can only be treated with chemotherapy, radiotherapy or targeted drug therapy to control the spread of the cancer cells, alleviate the patient’s symptoms, and prolong the patient’s life. Bladder cancer is a common malignant tumor. If it is high-grade bladder cancer, the tumor is usually of high malignant degree and grows and spreads fast, and symptoms such as frequent urination, urgency of urination, general weakness and hematuria may appear, so find it out as early as possible and treat it as early as possible. Avoid eating spicy, stimulating and greasy food on weekdays, and take light diet as the main focus. Do a good job in patient’s psychological communication, don’t have too much pressure, and pay more attention to rest.