The anchorage system can effectively improve the safety and durability of prestressed concrete structures, and has the advantage of non-destructive testing. The portable LCR bridge meter is used to measure the resistance value between them. The resistance value can reflect the degree of corrosion of prestressed tendons, so that it can be well monitored Measured the working condition of the prestressed tendons. Through the application in the actual project 30mT beam, the problems that need to be considered in the project application are obtained, and some solutions are put forward to make a beneficial attempt for the next step.