In recent years, prostate cancer has become one of the diseases that endanger society and human health, and it brings great pain and distress to male friends. In the early stage, prostate cancer is asymptomatic, but when the tumor invades or obstructs the urethra or bladder neck, symptoms similar to lower urinary tract obstruction or irritation will occur, and in severe cases, acute urinary retention, hematuria, and urinary incontinence may occur. Bone metastasis can cause bone pain, pathological fracture, anemia, and crural marrow compression leading to lower limb paraplegia. In order to reduce the incidence of prostate cancer, we should have a certain understanding of the early symptoms of prostate cancer. 1. Urination disorder. Patients with prostate cancer will experience difficulty in urination, thin or bifurcated urine stream, prolonged urination, frequent urination, urgent urination, painful urination, incomplete urination feeling, etc. In severe cases, urine dripping and urinary retention may occur. 2. Pain. Men with prostate cancer will experience pain in the lumbar, sacral, hip and hip area, pelvic and sciatic nerve pain, etc. 3. Metastatic symptoms. Metastasis is very common in prostate cancer patients. About 1/3 or even 2/3 of patients have bone metastasis or lymphatic metastasis when they first seek medical attention. 4. Systemic symptoms. As the pain affects the diet, sleep and spirit, the systemic condition becomes weaker and weaker after a long period of torment, with wasting and weakness, progressive anemia, cachexia or renal failure.