At present, the main prostate cancer treatments are: radical prostate surgery, iodine 125 particle implantation therapy, endocrine therapy, and radiotherapy. According to the stage of prostate cancer, the treatment options used are as follows: Stage A: Cancer discovered incidentally during the treatment of prostate enlargement, the lesions are limited, most of them are well differentiated, most patients have stable disease and slow progression, only about 1% may die from cancer. If no treatment is given, the tumor may progress in 35% of patients, so radical prostatectomy, iodine 125 particle implantation therapy or radiation therapy should be considered. Stage B1: Most of the tumors are well differentiated, but 5%-20% of patients are found to have lymphatic metastasis at the time of surgery, so radical prostatectomy and iodine 125 particle implantation treatment should be performed, and after treatment, the cancer-free survival rate of 15 years is 50%-70%. Stage B2: About 50% of the patients have invaded the seminal vesicles and 25%-35% of the patients have lymph node metastasis, so radical resection of prostate cancer plus pelvic lymph node dissection, iodine 125 particle implantation, orchiectomy, endocrine therapy, radiation therapy, etc. The cancer-free survival rate for 15 years after radical surgery in stage B2 is 25%. Stage C: There is no unified opinion on treatment, therefore, treatment is more difficult at that time, and most of the pelvic lymph nodes have metastasis. Generally, the following methods of treatment are used: 1. For patients who are old and frail and in poor general condition, extended range external radiotherapy is suitable; 2. Endocrine therapy (including double orchiectomy), combined with extended range external radiotherapy as well as radical surgery for prostate cancer after downgraded treatment; 3. Iodine 125 particle implantation therapy, which is also suitable for lymph nodes that cannot be operated, radiotherapy and endocrine therapy are ineffective metastasis and distant metastasis in local key site treatment. Stage D: Endocrine, iodine 125 particle implantation, chemotherapy and biological therapy are the main treatments. Bone metastasis can easily occur in prostate cancer, and those with bone metastasis should be treated with strontium 89-bone metastasis therapy, combined with bisphosphonates if necessary.