The invention relates to a DP3 level dynamic positioning failure alarm information system for realizing failure detection and alarm display of the DP3 system. The DP3 level dynamic positioning failure alarm information system comprises an FS (Foundation Station) failure detection module, a controller failure detection module, a failure detection module and a alarm information display module. The FS failure detection module is connected with the controller failure detection module in parallel; the failure detection module is in sequential connection with the FS failure detection module; the failure detection module is in sequential connection with the controller failure detection module; the alarm information display module is in sequential connection with the failure detection module. The system is more suitable for redundancy conditions of the DP3 dynamic positioning system, the failure detection is comprehensive and accurate, and the alarm information is richer.