Abstract: The influence of the marine anomalous refraction environment on the radar microwave and the far infrared wave band is researched, contrasted with two wave bands using the atmosphere refraction numerical model near sea surface as well as the marine environment observation data of Pingtan Island, Fujian and Woody Island, Xisha. The result shows that, when the radar microwave presents subrefraction, the infrared wave band actually presents＂ ducting＂, but the intensity and thickness are weak; when the microwave presents the atmospheric duct, infrared wave band displays subrefraction mostly. This research may provides the scientific reference for two types of detection system＇s optimized disposition as well as the effects of the marine environment on electro-optical sensors.