The optimal value for PSA after prostate cancer surgery is less than 0.2ng/ml. if it is greater than 0.2ng/ml during follow-up, it is indicated as a postoperative biochemical recurrence. PSA refers to prostate-specific antigen, which is usually not measurable 4 to 8 weeks after surgery, and most use 0.2ng/ml as a threshold. If this value is exceeded after surgery, there may be residual tumor, distant metastasis, etc. In this case, the patient’s condition needs to be reevaluated, and necessary adjuvant treatments need to be used. After prostate cancer surgery, the rinsing solution should be changed in time, rest should be paid attention to, diet should be controlled, and postoperative care should be done well. PSA should also be monitored to determine whether the tumor has recurred, and the patient’s quality of life also needs to be followed up. If the PSA value is elevated after prostate cancer surgery, it is recommended to consult the doctor in time and actively treat under the doctor’s guidance.