Generally speaking, bladder Ca means bladder cancer, Ca is the abbreviation of cancer cancer in English. In clinical practice, when a patient is suspected or diagnosed with cancer, sometimes in order to protect the patient’s privacy, or in order not to inform the patient himself for fear of causing fear, because some patients have a complete mental breakdown when they hear cancer, doctors write bladder cancer as bladder Ca. Bladder cancer is a common urological tumor in urology, when there is painless carnal hematuria, especially for middle-aged and elderly people, they should be promptly consulted. Urological tumors, especially bladder tumors, are often suspected. For bladder tumors, early detection and early treatment are still clinically effective.