Starting from the problem of drying clothes in the dormitory, the clothes are abstracted into organic fabrics, and the drying process is also simplified into a transportation process. The porous media model and the theory of transportation process are comprehensively applied, combined with COMSOL multi-physics simulation software, the drying process is given too. The surface temperature, the relative humidity of the porous medium and the drying time are affected by many factors, which have certain reference value for the study of the theory and application of the transport process.