The equipments' full-time data record, including the most equipments operating state information, can give helps to the capability test and fault maintenance. A fire control radar operating status' surveillance recorder which controlled by the PIC24FJ SCM has been introduced in the paper, and its hardware circuit composition and work theory have been described, moreover the work software designing flow of epigynous computer and SCM has been given. It has been proved that the system which can give the radars full-time data record has well capability, and the recorder characters that electromagnetism circumstance is complex and its work is continuous have been considered adequately. The system has low price but operates reliably, which import a new means for modern administration of complex electronic equipment ·