The most serious signs of prostate cancer are hematuria, urinary retention and bone pain. Bloody urine appears in prostate cancer is due to the gradual development and spread of cancer cells, broken cancer cells as well as abnormal proliferation cells are mixed into urine when urinating, and bloody urine is visible to the naked eye. When the growth of prostate cancer cells is too big, it will press the surrounding tissues, such as pressing the bladder or urethra to cause difficulty in urination and urinary retention, at this time, it is necessary to use catheterization in time to relieve the symptoms of urinary retention. When prostate cancer develops into advanced and serious stage, due to more spreading parts, the body will experience serious discomfort, and if bone metastasis occurs, bone pain and so on will occur. When you suffer from prostate cancer and experience discomfort, you should go to the hospital in time for examination and treatment.