Elderly people who urinate more at night do not necessarily have cancer. For example, prostatic hyperplasia can lead to increased nocturia in elderly men; in diabetic patients, nocturia increases due to increased urinary sugar and increased osmotic pressure; urinary tract infection can also lead to increased nocturia, accompanied by urinary urgency and pain. Urinary tract infections can also lead to increased nocturia, accompanied by other symptoms such as urgency and pain. Malignant tumors, such as bladder cancer and prostate cancer, can also lead to increased nocturia, but they are usually accompanied by other symptoms, such as painful urination, hematuria, and bone pain. Therefore, when elderly people urinate a lot at night, they should first consider common and multiple diseases, and not think of cancer at first.