Field-dividing technology is a feasible method to realize wide-view hyperspectral imager.The wide-view hyperspectral imager has to be radiationally matched besides spatial matching between every single view.In this article,the radiational matching technology and key factors for hyperspectral imager were analysised,and the method to realize the matching successfully was introduced briefly.Some fly experimental results of the realized hyperspectral imager were showed.The test results show that the radiational maching is well completed and the precision is in the error of the system allowed by comparing the spectral curves.