The predominant kernel(7mesh) of naked barleys were polished to give 65% yield. The diffusion coefficients and volume increase rates of polished naked burleys at 40℃ were 3∼4 and 2.2 times greater than those of naked barleys, respectively. The moisture gains of polished naked barleys were linearly related to the volume increases. The hardness of polished naked burleys during soaking was exponentially decreased.