Prostate cancer is the most common malignant tumor of the male genital system and varies greatly, related to the tumor staging. The latent and occult types have no local symptoms. The clinical type has local symptoms similar to those of prostate hyperplasia. The early stage is asymptomatic. When the cancer causes obstruction of the bladder neck and posterior urethra, symptoms can appear, hematuria is less common, and some patients visit the clinic with metastatic symptoms, manifesting as low back pain and sciatica. Therefore, prostate cancer should be excluded for metastatic cancer with unknown primary focus in men. Invasion of the posterior urethra of the bladder neck with inflammatory symptoms of urethral stricture, urinary frequency, urinary urgency, urinary pain, hematuria and difficulty in urination. Patients have chronic wasting symptoms, wasting, weakness and anemia. I. In the early stages, the patient does not have any features at all. As the disease progresses, patients may notice the following: 1. frequent and urgent urination 2. hematuria 3. urinary retention 4. difficulty in forming urine stream 5. bone pain 6. pungent sensation during urination 7. painful urination II. Patients who have reached the advanced stage of prostate cancer may also carry the following complications: 1. pain 2. bone marrow depression 3. high uric acid 4. bone tumor metastasis 5. leg swelling 6. pleural leakage 7. High calcium content 8. Paraneoplastic syndrome