With the development of the research on climatic variation, environmental monitoring, remote sensing and other fields, the importance of atmospheric radiation transmission has become increasingly prominent. Radiative transfer simulation, atmospheric transmissivity and spectral radiance calculation, and the inversion of the meteorological elements are necessary. Therefore, it is urgent to develop a fast, accurate and widely used radiative transfer model. A highly modular and widely used radiative transfer simulation software- the atmospheric radiative transfer simulator(ARTS) is presented, including research background, the main function of the software, the calculation process, the application fields, and some simulation examples. At present, the radiative transfer model has been applied to the forward simulation system and inversion system of Odin/SMR, MASTER and SOPRANO detectors successfully.