Abstract: In the current, the Safeguard mode of ship-borne radar always adopts passive protection like periodical survey or active repair, which can result the less time feedback of the fault information and influence the combat effectiveness of the radar equipment. Introduce health management technology in equipment design can effectively avoid or reduce the task malfunction, and hoist the equipment′s availability. This paper sets the radar health management architecture as the start, carried out the health evaluation based on the influence and harmfulness of the malfunction, designed the model in accordance with the harmfulness of the malfunction and reliability of the task, and evaluates the equipment′s state health value. The condition of radar performance health is evaluated from system performance (potency, accuracy) and subsystem performance (aerial matrix plane, servo drive, cooling), and the information of radar health degeneration is monitored dynamically, thus provide the technology means based on status maintenance for radar, and lays the foundation for the promotion of the exerting potency and reliability for ship-borne radar.