Under the background of global warming, the global net radiation monitoring is become more and more important. It has gradually become an important way to study regional synoptic conditions and climate. In order to evaluate the domestic FSJ1 fourcomponent net radiometer, we tested it in Barrow, Alaska (2035°E, 714°N) from 10 to 23 April 2017, compared with the CNR4 fourcomponent net radiometer, which is widely used in the polar regions. The results show that FSJ1 fourcomponent net radiometer performs well in precision and linear correlation under different conditions of clearness and in both daytime and nighttime without icing/riming on surface. The relative error and correlation coefficient of parameters with CNR4 are within 5% and above 09, respectively. However, FSJ1 shows a delay in the response of the radiation change under the influence of polar condition when ice/rime forms on its surface. The relative errors of the pyranometer and pyrgeometer are up to 25% and 7%, respectively. Therefore, it is still a key point to improve the suitable ventilating and heating device for polar radiation stations, and the reasonable filtering method and parameterization scheme are also needed.