To fill the gap in ground-based solar radiation observations in the existing meteorological business station network in China, we conducted two field experiments in Ewenki Autonomous Banner, Hulunbuir, Inner Mongolia in 2019 and 2022, using a domestic self-calibrating hyperspectral radiometer system. The results show that the monthly missing data rate of the system is less than 1%, and the mean time between failures reaches 96.5% of the effective working time, demonstrating its good stability in harsh outdoor environments. Compared with the corresponding products of broadband radiometers, the linear fitting coefficients of ultraviolet radiation, photosynthetically active radiation, total radiation, and direct radiation are 0.95, 0.97, 0.75, and 0.80, respectively. The linear fitting coefficient of hyperspectral direct irradiance of the proposed hyperspectral radiometer system is 97% compared with the products of the Japanese EKO hyperspectral radiometer, and the deviation of hyperspectral reflectance from the reference reflectance is less than 0.5%. These results indicate that the domestic hyperspectral radiometer system operates stably, and its data product accuracy is comparable to that of international advanced solar hyperspectral observation products. It can provide strong support for improving China's ground-based solar radiation observation network and validating the products of meteorological satellite optical payloads, thereby significantly enhancing regional meteorological detection capabilities.