Reef radar is an important part of the construction of maritime defense，but reef area is small, the environment is bad,away from the mainland, The author analyzes the reef radar design and in the process of using such as workers tension, protection and guarantee problem, Summed up the reef radar design must strengthen comprehensive protection, automation, intelligent, modular design, on this basis, from the target admission automation intelligent design, modular design, fault detection fast repair design, the integrated protection design aspects discussed reef radar design , improve the radar environment adaptability, easing the burden on the operation and the security personnel, to ensure the operational give full play to the performance of radar.