Abstract
Analytical procedure and method is under development for the X-Ray Spectrometer onboard SELENE(Kaguya). We present the system in detail. Furterhmore, we investigate the datainterpretation for XRF, including the surface microscopic and macroscopic roughness as well as mineral mixing effects. For a daily automatic analysis for huge amount of data, correction equations for ther effects are necessary to be defined. We also present the currect status of the correction method.